Application of a composite electrolyte in a solidacid fuel cell system: A micro-arc oxidation alumin
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Amicro-arcoxidationalumina(MOA)supportfilledwithaCsH2PO4protonconductorwasinvestigatedasaninorganiccompositeelectrolyteforaH2/O2solid-acidfuelcell(SAFC).TheMOAsupportwaspolycrystallineandcontaineda-andg-Al2O3phases;while,theprotonconductorCsH2PO4formedaninterlacednetworkwithintheMOAsupport.Thesingle-moduleSAFCusingthefabricatedMOA/CsH2PO4membranedeliveredapeakpowerofw38.5mWcm2andaprotonconductivityofw2.1mScm1atalowtemperature(25C).ComparedtoaSAFCusingananodicaluminamembranecompositeelectrolyte(AAM/CsH2PO4SAFC),whichdisplayedrapiddegradation,theSAFCusingtheMOA/CsH2PO4compositeelectrolyteshowedimprovedstabilitywithcyc领.Thiswasattributedtothecrystallinea-Al2O3phasethatwaspartoftheMOAsupportthathadincreasedthechemicalresistance.
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