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基于壳聚糖的质子交换膜制备及性能测试.docx

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基于壳聚糖的质子交换膜制备及性能测试 Abstract Thestudyaimedatthepreparationandperformancetestingofprotonexchangemembranesusingchitosanmaterial.Chitosanisarenewableandenvironmentallyfriendlymaterialthathaspotentialinenergyapplications.Inthisresearch,wemodifiedchitosanwithsulfonicacidgroupsandpreparedprotonexchangemembranesusingacastingmethod.ThepreparedmembraneswerecharacterizedusingFouriertransforminfraredspectroscopy,scanningelectronmicroscopy,andtensiletesting.Theprotonconductivityanddurabilityofthemembraneswerealsoinvestigated.Theresultsshowedthatthepreparedprotonexchangemembranesexhibitedexcellentprotonconductivityandmechanicalstrength.Themembranesalsohadgoodstabilityinacidicandalkalineenvironments.Thestudydemonstratedthepotentialofchitosanmaterialforuseinprotonexchangemembranesforfuelcellapplications. Keywords:chitosan,protonexchangemembrane,sulfonicacidgroup,fuelcell,conductivity,durability Introduction Protonexchangemembranes(PEMs)playacrucialroleinfuelcelltechnologyastheyselectivelytransportprotonswhileblockingelectronsandotherchargedspecies.PEMsareusedinvariousapplications,includinghydrogenfuelcells,watertreatment,anddesalinationprocesses.TheperformanceofPEMsisinfluencedbytheirproperties,includingprotonconductivity,selectivity,mechanicalstrength,andstability.Currently,mostPEMsaremadefromperfluorinatedsulfonicacidpolymermaterials,whichareexpensiveandhavelowprotonconductivityathightemperatures.Therefore,thereisaneedforalternativelow-costandefficientPEMmaterials. Chitosanisanaturalpolysaccharidematerialthatiswidelyavailablefromtheexoskeletonofcrustaceans,includingshrimpandcrabs,andhaspotentialinenergyapplicationsduetoitsrenewableandenvironmentallyfriendlyproperties.Chitosancanbemodifiedbyintroducingsulfonicacidgroups,whichenhanceitsprotonexchangeproperties.Theresultingchitosan-basedPEMshavebeenshowntohaveexcellentprotonconductivityandstabilityinacidicandalkalineenvironments. Inthisstudy,weaimedtoprepareandcharacterizeprotonexchangemembranesusingchitosanmaterialmodifiedwithsulfo