Abstract
AbstractThe sections in this article areIntroductionThe Polymer Electrolyte and Direct Methanol Fuel Cells: Brief Overview of Key Components and Features of Cells and StacksThe Polymer Electrolyte and Direct Methanol Fuel Cells: Power Output and Energy‐conversion EfficiencyThe Ionomeric MembraneChemical Structure and Chemical Stability of Proton‐conducting Polymeric MembranesThe Ionomeric Membrane/Water SystemWater Uptake by Ionomeric MembranesThe State of Water in the Ionomeric MembraneProton Conduction in Ionomeric MembranesWater Currents through Ionomeric Membranes in an OperatingPEFCDiffusion of Water in poly[PFSA] MembranesElectroosmosisModeling of the Water Profile and Net Water Flow Rate across the Ionomeric Membrane under CurrentThePEFCIonomeric Membrane—State of the ArtFrom Ionomeric Membrane to the Membrane‐electrode AssemblyPt/CCatalysts Applied to the MembraneLong‐term Stability of Membrane/Electrode Assemblies inPEFCsFrom aPEFCStack to thePEFCPower SystemElectrocatalysis and Electrodes inPEFCsThe Anode Process in thePEFCsThePEFCAnode with Pure Hydrogen FeedThe Anode Process in aPEFCOperating on Reformed Carbonaceous FuelsAnode Catalyst Cleansing by Oxygen BleedingCO‐tolerantPEFCAnode CatalystsThePEFCAnode: SummaryThe Air Cathode in thePEFCPEFCCathode Losses and the Uniqueness of the Pt CatalystThe Kinetics of theORRat the Pt/Ionomer InterfaceThePEFCAir Cathode: Comprehensive Analysis of Voltage LossPEFCCathode Modeling and Diagnostics Based on Impedance SpectraThePEFCCathode: SummaryThe Direct Methanol Fuel CellTheDMFCAnodeTheDMFCMembrane: Methanol Crossover and the Impact on the Power/Efficiency Relationship in theDMFCTheDMFCAir CathodePotential Applications ofDMFCsin Portable Power SourcesMicrofuel Cell System Engineering ChallengesDemonstrations of Small Fuel‐cell System PrototypesAcknowledgments
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