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质子交换膜燃料电池Pt基催化剂研究进展.docx

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质子交换膜燃料电池Pt基催化剂研究进展 Title:RecentAdvancesinPlatinum-BasedCatalystsforProtonExchangeMembraneFuelCells Abstract: Protonexchangemembranefuelcells(PEMFCs)arepromisingdevicesforcleanandefficientenergyconversion.ThedevelopmentofhighlyefficientanddurablecatalystsiscriticalforthecommercializationofPEMFCs.Amongvariouscatalystmaterials,platinum(Pt)anditsalloysarewidelyregardedasthemosteffectivecatalystsfortheoxygenreductionreaction(ORR)inPEMFCs.ThispaperreviewsrecentprogressinPt-basedcatalystsforPEMFCs,focusingonthesynthesismethods,structuraldesign,andperformanceenhancementstrategies. 1.Introduction 1.1OverviewofPEMFCs 1.2ImportanceofPt-basedCatalystsinPEMFCs 2.SynthesisMethodsofPt-basedCatalysts 2.1ConventionalSynthesisMethods 2.2AdvancedSynthesisMethods 3.StructuralDesignofPt-basedCatalysts 3.1Pt-supportedCatalysts 3.2PtAlloyCatalysts 3.3Core-ShellCatalysts 4.PerformanceEnhancementStrategiesforPt-basedCatalysts 4.1AlloyingPtwithTransitionMetals 4.2NanostructuringPtCatalysts 4.3SurfaceModificationofPtCatalysts 4.4RationalDesignofPtCatalysts 5.ChallengesandFuturePerspectives 5.1CostReductionofPtCatalysts 5.2DurabilityofPtCatalysts 5.3IntegrationofPtCatalystswithMembraneandGasDiffusionLayers 5.4DevelopmentofNon-PtCatalysts 6.Conclusion 1.Introduction 1.1OverviewofProtonExchangeMembraneFuelCells(PEMFCs) PEMFCs,alsoknownaspolymerelectrolytemembranefuelcells,areamongthemostpromisingfuelcelltechnologiesduetotheirhighenergyconversionefficiency,lowoperatingtemperature,andenvironmentalfriendliness.APEMFCconsistsofananode,acathode,andaprotonexchangemembrane,whichconductsprotonsbetweenthetwoelectrodeswhileblockingtheelectrons.TheanodesideofthePEMFCutilizesaplatinum-basedcatalysttofacilitatetheelectrochemicaloxidationofhydrogen,whilethecathodesideemploysthesamecatalysttoenhancetheoxygenreductionreaction(ORR).ThedevelopmentofhighlyefficientanddurablecatalystsiscrucialforthecommercializationofPEMFCs. 1.2ImportanceofPt-basedCatalystsinPEMFCs Amongvariouscatalystmaterials,platinum(Pt)anditsa