<?xml version="1.0" encoding="US-ASCII" ?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.4b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
    <!-- Field: Doc-Info; Name: Misc; Value: 96sps7xRiXgOn8uFZn9MSaiLybOdx5Z76elBtmV7bQk6TyMqiRLLLyfQ9mCG4QwC -->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:ecd="http://xbrl.sec.gov/ecd/2025" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:srt="http://fasb.org/srt/2025" xmlns:cyd="http://xbrl.sec.gov/cyd/2025" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:xpon="http://xpon/20251231" elementFormDefault="qualified" targetNamespace="http://xpon/20251231">
    <annotation>
      <appinfo>
        <link:roleType roleURI="http://xpon/role/Cover" id="Cover">
          <link:definition>00000001 - Document - Cover</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/BalanceSheets" id="BalanceSheets">
          <link:definition>00000002 - Statement - Balance Sheets</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
          <link:definition>00000003 - Statement - Balance Sheets (Parenthetical)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StatementsOfOperations" id="StatementsOfOperations">
          <link:definition>00000004 - Statement - Statements of Operations</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StatementsOfStockholdersEquity" id="StatementsOfStockholdersEquity">
          <link:definition>00000005 - Statement - Statements of Stockholders' Equity</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StatementsOfCashFlows" id="StatementsOfCashFlows">
          <link:definition>00000006 - Statement - Statements of Cash Flows</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/OrganizationAndNatureOfOperations" id="OrganizationAndNatureOfOperations">
          <link:definition>999014 - Disclosure - Organization and Nature of Operations</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPolicies" id="SummaryOfSignificantAccountingPolicies">
          <link:definition>999015 - Disclosure - Summary of Significant Accounting Policies</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/PropertyAndEquipmentNet" id="PropertyAndEquipmentNet">
          <link:definition>999016 - Disclosure - Property and Equipment, Net</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/AccruedExpensesAndOtherCurrentLiabilities" id="AccruedExpensesAndOtherCurrentLiabilities">
          <link:definition>999017 - Disclosure - Accrued Expenses and Other Current Liabilities</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/Long-termDebt" id="Long-termDebt">
          <link:definition>999018 - Disclosure - Long-Term Debt</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholderPromissoryNotes" id="StockholderPromissoryNotes">
          <link:definition>999019 - Disclosure - Stockholder Promissory Notes</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/EquityAndDebtFinancings" id="EquityAndDebtFinancings">
          <link:definition>999020 - Disclosure - Equity and Debt Financings</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/CommitmentsAndContingencies" id="CommitmentsAndContingencies">
          <link:definition>999021 - Disclosure - Commitments and Contingencies</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquity" id="StockholdersEquity">
          <link:definition>999022 - Disclosure - Stockholders&#8217; Equity</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SegmentReporting" id="SegmentReporting">
          <link:definition>999023 - Disclosure - Segment Reporting</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxes" id="IncomeTaxes">
          <link:definition>999024 - Disclosure - Income Taxes</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/KPlan" id="KPlan">
          <link:definition>999025 - Disclosure - 401(k) Plan</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/Related-partyTransactions" id="Related-partyTransactions">
          <link:definition>999026 - Disclosure - Related-Party Transactions</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SubsequentEvents" id="SubsequentEvents">
          <link:definition>999027 - Disclosure - Subsequent Events</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesPolicies" id="SummaryOfSignificantAccountingPoliciesPolicies">
          <link:definition>999028 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesTables" id="SummaryOfSignificantAccountingPoliciesTables">
          <link:definition>999029 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/PropertyAndEquipmentNetTables" id="PropertyAndEquipmentNetTables">
          <link:definition>999030 - Disclosure - Property and Equipment, Net (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/AccruedExpensesAndOtherCurrentLiabilitiesTables" id="AccruedExpensesAndOtherCurrentLiabilitiesTables">
          <link:definition>999031 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/Long-termDebtTables" id="Long-termDebtTables">
          <link:definition>999032 - Disclosure - Long-Term Debt (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/CommitmentsAndContingenciesTables" id="CommitmentsAndContingenciesTables">
          <link:definition>999033 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityTables" id="StockholdersEquityTables">
          <link:definition>999034 - Disclosure - Stockholders&#8217; Equity (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesTables" id="IncomeTaxesTables">
          <link:definition>999035 - Disclosure - Income Taxes (Tables)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesDetails" id="SummaryOfSignificantAccountingPoliciesDetails">
          <link:definition>999036 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesDetails1" id="SummaryOfSignificantAccountingPoliciesDetails1">
          <link:definition>999037 - Disclosure - Summary of Significant Accounting Policies (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesDetails2" id="SummaryOfSignificantAccountingPoliciesDetails2">
          <link:definition>999038 - Disclosure - Summary of Significant Accounting Policies (Details 2)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" id="SummaryOfSignificantAccountingPoliciesDetailsNarrative">
          <link:definition>999039 - Disclosure - Summary of Significant Accounting Policies (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/PropertyAndEquipmentNetDetails" id="PropertyAndEquipmentNetDetails">
          <link:definition>999040 - Disclosure - Property and Equipment, Net (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/PropertyAndEquipmentNetDetailsNarrative" id="PropertyAndEquipmentNetDetailsNarrative">
          <link:definition>999041 - Disclosure - Property and Equipment, Net (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/AccruedExpensesAndOtherCurrentLiabilitiesDetails" id="AccruedExpensesAndOtherCurrentLiabilitiesDetails">
          <link:definition>999042 - Disclosure - Accrued Expenses and Other Current Liabilities (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/Long-termDebtDetails" id="Long-termDebtDetails">
          <link:definition>999043 - Disclosure - Long-Term Debt (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/Long-termDebtDetails1" id="Long-termDebtDetails1">
          <link:definition>999044 - Disclosure - Long-Term Debt (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholderPromissoryNotesDetailsNarrative" id="StockholderPromissoryNotesDetailsNarrative">
          <link:definition>999045 - Disclosure - Stockholder Promissory Notes (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/EquityAndDebtFinancingsDetailsNarrative" id="EquityAndDebtFinancingsDetailsNarrative">
          <link:definition>999046 - Disclosure - Equity and Debt Financings (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/CommitmentsAndContingenciesDetails" id="CommitmentsAndContingenciesDetails">
          <link:definition>999047 - Disclosure - Commitments and Contingencies (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/CommitmentsAndContingenciesDetails1" id="CommitmentsAndContingenciesDetails1">
          <link:definition>999048 - Disclosure - Commitments and Contingencies (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
          <link:definition>999049 - Disclosure - Commitments and Contingencies (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails" id="StockholdersEquityDetails">
          <link:definition>999050 - Disclosure - Stockholders' Equity (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails1" id="StockholdersEquityDetails1">
          <link:definition>999051 - Disclosure - Stockholders' Equity (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails2" id="StockholdersEquityDetails2">
          <link:definition>999052 - Disclosure - Stockholders' Equity (Details 2)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails3" id="StockholdersEquityDetails3">
          <link:definition>999053 - Disclosure - Stockholders' Equity (Details 3)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails4" id="StockholdersEquityDetails4">
          <link:definition>999054 - Disclosure - Stockholders' Equity (Details 4)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetails5" id="StockholdersEquityDetails5">
          <link:definition>999055 - Disclosure - Stockholders' Equity (Details 5)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/StockholdersEquityDetailsNarrative" id="StockholdersEquityDetailsNarrative">
          <link:definition>999056 - Disclosure - Stockholders&#8217; Equity (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesDetails" id="IncomeTaxesDetails">
          <link:definition>999057 - Disclosure - Income Taxes (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesDetails1" id="IncomeTaxesDetails1">
          <link:definition>999058 - Disclosure - Income Taxes (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesDetails2" id="IncomeTaxesDetails2">
          <link:definition>999059 - Disclosure - Income Taxes (Details 2)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesDetails3" id="IncomeTaxesDetails3">
          <link:definition>999060 - Disclosure - Income Taxes (Details 3)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/IncomeTaxesDetailsNarrative" id="IncomeTaxesDetailsNarrative">
          <link:definition>999061 - Disclosure - Income Taxes (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://xpon/role/SubsequentEventsDetailsNarrative" id="SubsequentEventsDetailsNarrative">
          <link:definition>999062 - Disclosure - Subsequent Events (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:linkbaseRef xlink:type="simple" xlink:href="xpon-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="xpon-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="xpon-20251231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links" />
        <link:linkbaseRef xlink:type="simple" xlink:href="xpon-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
    <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
    <import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
    <import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd" />
    <import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd" />
    <import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd" />
    <import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
    <import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd" />
    <import namespace="http://xbrl.sec.gov/cyd/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd" />
    <element id="xpon_OneCustomerMember" name="OneCustomerMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_CustomerFourMember" name="CustomerFourMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsOptionsAndRestrictedStockUnitsMember" name="WarrantsOptionsAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_VehiclesAndTransportationEquipmentMember" name="VehiclesAndTransportationEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ManufacturingEquipmentMember" name="ManufacturingEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_OfficeFurnitureAndEquipmentMember" name="OfficeFurnitureAndEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarehouseEquipmentMember" name="WarehouseEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_QAEquipmentMember" name="QAEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ToolingAndMoldsMember" name="ToolingAndMoldsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SeriesAWarrantsMember" name="SeriesAWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SeriesBwarrantsMember" name="SeriesBwarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsJanuary2025Member" name="WarrantsJanuary2025Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockOptionsMember" name="StockOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PreFundedWarrantsMember" name="PreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_OfficeFurnitureEquipmentMember" name="OfficeFurnitureEquipmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NotePayableCreditUnionMember" name="NotePayableCreditUnionMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NotePayableSBAMember" name="NotePayableSBAMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_GMFinancialMember" name="GMFinancialMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_UnsecuredPromissoryNotesMember" name="UnsecuredPromissoryNotesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_October2025PreFundedWarrantMember" name="October2025PreFundedWarrantMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_CommonUnitsMember" name="CommonUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PreFundedUnitsMember" name="PreFundedUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_January2025PublicOfferingMember" name="January2025PublicOfferingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsOptionsMember" name="WarrantsOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantInducementMember" name="WarrantInducementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PreReverseStockSplitMember" name="PreReverseStockSplitMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EquityLineOfCreditMember" name="EquityLineOfCreditMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_August2024PublicOfferingMember" name="August2024PublicOfferingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_LongTermNonCancellableOperatingLeaseAgreementsMember" name="LongTermNonCancellableOperatingLeaseAgreementsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_TerminationAgreementMember" name="TerminationAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_AlexanderMember" name="AlexanderMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_UnregisteredSharesOfCommonStockMember" name="UnregisteredSharesOfCommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncentiveAwardPlan2021Member" name="IncentiveAwardPlan2021Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SeriesAWarrantMember" name="SeriesAWarrantMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_CashBasisMember" name="CashBasisMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsMember" name="WarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EmployeeStockPurchasePlan2021Member" name="EmployeeStockPurchasePlan2021Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice1Member" name="ExercisePrice1Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice2Member" name="ExercisePrice2Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice3Member" name="ExercisePrice3Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice4Member" name="ExercisePrice4Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice5Member" name="ExercisePrice5Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExercisePrice6Member" name="ExercisePrice6Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantSeriesAMember" name="WarrantSeriesAMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantJanuary2025Member" name="WarrantJanuary2025Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExerciseOfStockOptionsMember" name="ExerciseOfStockOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExerciseofJanuary2025WarrantsMember" name="ExerciseofJanuary2025WarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ExerciseofPreFundedWarrantsMember" name="ExerciseofPreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SettlementofRSUsMember" name="SettlementofRSUsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_InvestmentIncomeLossInterest" name="InvestmentIncomeLossInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SuspendedLiabilityExpense" name="SuspendedLiabilityExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfSeriesAWarrants" name="ProceedsReceivedFromCashExerciseOfSeriesAWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfSeriesAWarrantsShares" name="ProceedsReceivedFromCashExerciseOfSeriesAWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfSeriesBWarrants" name="ProceedsReceivedFromCashExerciseOfSeriesBWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfSeriesBWarrantsShares" name="ProceedsReceivedFromCashExerciseOfSeriesBWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfJanuary2025Warrants" name="ProceedsReceivedFromCashExerciseOfJanuary2025Warrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfJanuary2025WarrantsShares" name="ProceedsReceivedFromCashExerciseOfJanuary2025WarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IssuanceOfSharesAndPrefundedWarrantsNetOfIssuanceCost" name="IssuanceOfSharesAndPrefundedWarrantsNetOfIssuanceCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IssuanceOfSharesAndPrefundedWarrantsNetOfIssuanceCostShares" name="IssuanceOfSharesAndPrefundedWarrantsNetOfIssuanceCostShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueProceedsReceivedFromCashlessExerciseOfWarrants" name="StockIssuedDuringPeriodValueProceedsReceivedFromCashlessExerciseOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesProceedsReceivedFromExerciseOfWarrantsShares" name="StockIssuedDuringPeriodSharesProceedsReceivedFromExerciseOfWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsReceivedFromCashExerciseOfWarrants" name="ProceedsReceivedFromCashExerciseOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueIssuanceAndSettlementOfRestrictedStock" name="StockIssuedDuringPeriodValueIssuanceAndSettlementOfRestrictedStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesIssuanceAndSettlementOfRestrictedStock" name="StockIssuedDuringPeriodSharesIssuanceAndSettlementOfRestrictedStock" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueIssuanceOfSharesInExchangeForServices" name="StockIssuedDuringPeriodValueIssuanceOfSharesInExchangeForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesIssuanceOfSharesInExchangeForServices" name="StockIssuedDuringPeriodSharesIssuanceOfSharesInExchangeForServices" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueSettlementOfCommitmentShares" name="StockIssuedDuringPeriodValueSettlementOfCommitmentShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SettlementOfCommitmentSharesInShares" name="SettlementOfCommitmentSharesInShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueIssuanceOfSharesAndPrefundedWarrantsFollowonOfferingNetOfIssuanceCosts" name="StockIssuedDuringPeriodValueIssuanceOfSharesAndPrefundedWarrantsFollowonOfferingNetOfIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesIssuanceOfSharesAndPrefundedWarrantsFollowonOfferingNetOfIssuanceCostsShares" name="StockIssuedDuringPeriodSharesIssuanceOfSharesAndPrefundedWarrantsFollowonOfferingNetOfIssuanceCostsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ProceedsFromExerciseOfSeriesWarrants" name="ProceedsFromExerciseOfSeriesWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesProceedsFromExerciseOfSeriesAWarrantsShares" name="StockIssuedDuringPeriodSharesProceedsFromExerciseOfSeriesAWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodValueProceedsFromExerciseOfSeriesBWarrants" name="StockIssuedDuringPeriodValueProceedsFromExerciseOfSeriesBWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockIssuedDuringPeriodSharesProceedsFromExerciseOfSeriesBWarrantsShares" name="StockIssuedDuringPeriodSharesProceedsFromExerciseOfSeriesBWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SharesIssuedForTrueupUponReverseStockSplit" name="SharesIssuedForTrueupUponReverseStockSplit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SharesIssuedForTrueupUponReverseStockSplitShares" name="SharesIssuedForTrueupUponReverseStockSplitShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_StockbasedSettlement" name="StockbasedSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IssuanceOfCommonStockInExchangeForServices" name="IssuanceOfCommonStockInExchangeForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NoncashExpenseInExchangeForAssetDisposal" name="NoncashExpenseInExchangeForAssetDisposal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncreaseDecreaseInInventoryValuation" name="IncreaseDecreaseInInventoryValuation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncreaseDecreaseInInSuspendedLiability" name="IncreaseDecreaseInInSuspendedLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncreaseInPrepaidintransitInventory" name="IncreaseInPrepaidintransitInventory" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncreaseInRightofuseAssetsAndLeaseLiabilities" name="IncreaseInRightofuseAssetsAndLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_DecreaseInSuspendedLiability" name="DecreaseInSuspendedLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PaymentsToAcquireOtherProductiveAsset" name="PaymentsToAcquireOtherProductiveAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PrincipalPaymentsOnConvertibleNote" name="PrincipalPaymentsOnConvertibleNote" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_PrincipalPaymentsOnStockholderPromissoryNotes" name="PrincipalPaymentsOnStockholderPromissoryNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NetProceedsFromExerciseOfWarrants" name="NetProceedsFromExerciseOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_AcquisitionModificationOfOperatingLeaseRightofuseAssetAndLeaseLiability" name="AcquisitionModificationOfOperatingLeaseRightofuseAssetAndLeaseLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_DisclosureStockholderPromissoryNotesAbstract" name="DisclosureStockholderPromissoryNotesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ShareholderPromissoryNotesTextBlock" name="ShareholderPromissoryNotesTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_CustomerDepositsPolicyTextBlock" name="CustomerDepositsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_LiabilityForRefundsPolicyTextBlock" name="LiabilityForRefundsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_AccountingPronouncementsButNotYetAdoptedPolicyPolicyTextBlock" name="AccountingPronouncementsButNotYetAdoptedPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ScheduleOfEstimatedUsefulLivesTableTextBlock" name="ScheduleOfEstimatedUsefulLivesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ScheduleOfVariousWarrantsOptionsIssuedAndOutstandingTableTextBlock" name="ScheduleOfVariousWarrantsOptionsIssuedAndOutstandingTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ScheduleOfAssumptionsTableTextBlock" name="ScheduleOfAssumptionsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ScheduleOfShareBasedCompensationsStockOptionsActivityTableTextBlock" name="ScheduleOfShareBasedCompensationsStockOptionsActivityTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ScheduleOfEffectiveIncomesTaxRateReconciliationTableTextBlock" name="ScheduleOfEffectiveIncomesTaxRateReconciliationTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NetLossIncome" name="NetLossIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NetLoss" name="NetLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NetCashProvidedByUsedInOperatingsActivities" name="NetCashProvidedByUsedInOperatingsActivities" nillable="true" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_RetainedEarningAccumulatedDeficit" name="RetainedEarningAccumulatedDeficit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_InventoryRemainsAmout" name="InventoryRemainsAmout" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ShippingAndHandlingCostsForShippingProduct" name="ShippingAndHandlingCostsForShippingProduct" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_DeferredIncomeAndDepositSublease" name="DeferredIncomeAndDepositSublease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_FranchiseTax" name="FranchiseTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsToPurchase" name="WarrantsToPurchase" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsRemainOutstanding" name="WarrantsRemainOutstanding" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ConvertibleNoteFinancingDescription" name="ConvertibleNoteFinancingDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EquityLineOfCreditDescription" name="EquityLineOfCreditDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_OperatingLeaseLiabilites" name="OperatingLeaseLiabilites" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_OperatingLeaseLiabilityInterestRate" name="OperatingLeaseLiabilityInterestRate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_SubleaseDeposit" name="SubleaseDeposit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_NumberOfWarrantsnonplanOption" name="NumberOfWarrantsnonplanOption" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IssuableShares" name="IssuableShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingGrantedAggregateIntrinsicValueGranted" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingGrantedAggregateIntrinsicValueGranted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_CashlessConversionOptionIssuance" name="CashlessConversionOptionIssuance" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ResetPrice" name="ResetPrice" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ReducedToPerShare" name="ReducedToPerShare" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsremainOutstanding1" name="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsremainOutstanding1" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_WarrantsExercisable" name="WarrantsExercisable" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetValuationAllowance" name="EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetValuationAllowance" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EffectiveIncomeTaxRateReconciliationPermanentDifferenceItemsPercent" name="EffectiveIncomeTaxRateReconciliationPermanentDifferenceItemsPercent" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_EffectiveIncomeTaxRateContinuingOperation" name="EffectiveIncomeTaxRateContinuingOperation" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsInventoryReserve" name="DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsInventoryReserve" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDepreciation" name="DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncomeTaxExpenseBenefits" name="IncomeTaxExpenseBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="xpon_IncomeTaxReconciliationStateAndLocalIncomeTax" name="IncomeTaxReconciliationStateAndLocalIncomeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
