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1、ECSTransactions,45(23)121-130(2013)10.1149/04523.0121ecst©TheElectrochemicalSocietyCharacterizationofAnionExchangeMembraneTechnologyforLowCostElectrolysisaaaabK.E.Ayers,E.B.Anderson,C.B.Capuano,M.Niedzweicki,M.Hickner,b,ccbC-YWang,Y.Len,andW.ZhouaProtonOnSite
2、10TechnologyDrive,Wallingford,CT06492,USAbDepartmentofMaterialScience&Engineering,cElectrochemicalEngineCenter,DepartmentofMechanicalandNuclearEngineering,PennsylvaniaStateUniversity,UniversityPark,PA16802,USAProtonOnSite’slineofcommercialproductsbasedonproto
3、nexchangemembrane(PEM)technologyiscompetitivewithdeliveredhydrogeninmanyindustrialgasmarkets.Protonhasdemonstratedsignificantefficiencyimprovementsandcostreductionsoverthepastseveralyears.Still,majoradvancesarerequiredinordertoprovideacost-competitivehydrogen
4、sourceforenergymarkets.Alkalineexchangemembranes(AEMs)offerapotentiallongtermpathwaytolowercostelectrolysisbecausetheycanoperateatthehighcurrentdensityandhighdifferentialpressureofthePEMwhileusingnon-preciousmetalcatalystsandbasemetalcellmaterialsforlowcost.P
5、rotoniscurrentlyperformingonanARPA-EprojectincollaborationwithPennStatetodevelopanAEM-basedregenerativefuelcell.ThispaperdescribesprogresstodateontheAEMelectrolyzerbeingdevelopedunderthiseffort.IntroductionWaterelectrolysishasbenefitsoverotherhydrogengenerati
6、ontechnologiesduetothelackofcarbonfootprintwhenintegratedwitharenewablesourceofenergy.Specifically,ionexchangemembrane-basedelectrolysisisapromisingtechnologyforhydrogengenerationapplicationsbecauseofthelackofcorrosiveelectrolytes,smallfootprint,andabilitytog
7、enerateathighpressure,requiringonlydeionizedwaterandanenergysource.WhileProtonbelievesthatthePEMsystemshavesignificantopportunityforbothcapitalandlifecyclecostthroughcostreductionandefficiencyimprovements,ananionexchangemembrane-basedsystemwouldenableboththea
8、dvantagesofthePEMandthealkalineliquidbasedsystems.However,anionexchangemembranetechnologyismuchlessmaturethanPEMtechnology,andthepolymershavenotbeenasstable.StatusoftheTechnologyProtonexc
