04298nam 2200985z- 450 991056648110332120231214133339.0(CKB)5680000000037569(oapen)https://directory.doabooks.org/handle/20.500.12854/81127(EXLCZ)99568000000003756920202205d2022 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierProton Exchange Membrane Fuel Cells (PEMFCs)BaselMDPI - Multidisciplinary Digital Publishing Institute20221 electronic resource (214 p.)3-0365-1544-5 3-0365-1543-7 The proton exchange membrane fuel cell is an electrochemical energy conversion device, which transforms a fuel such as hydrogen and an oxidant such as oxygen in ambient air into electricity with heat and water byproducts. The device is more efficient than an internal combustion engine because reactants are directly converted into energy through a one-step electrochemical reaction. Fuel cells combined with water electrolyzers, which electrochemically split water into hydrogen and oxygen using renewable energy sources such as solar, mitigate global warming concerns with reduced carbon dioxide emissions. This collection of papers covers recent advancements in fuel cell technology aimed at reducing cost, improving performance, and extending durability, which are perceived as crucial for a successful commercialization. Almost all key materials, as well as their integration into a cell, are discussed: the bus plates that collect the electrical current, the gas diffusion medium that distributes the reactants over catalysts promoting faster reactions, and the membrane separating oxygen and hydrogen gases and closing the electrical circuit by transporting protons. Fuel cell operation below the freezing point of water and with impure reactant streams, which impacts durability, is also discussed.Proton Exchange Membrane Fuel Cells Technology: general issuesbicsscChemical engineeringbicsscPEM fuel cellmembrane electrode assembly (MEA)response surface methodcomputational fuel cell dynamicsfuel impuritiesISO concentrationultralow-loaded anode catalyst layerplatinum electrodeshut-down and start-up processproton exchange membrane fuel cellgraphene thin filmcurrent collectormoduleproton exchange membrane fuel cellsdurabilitycontaminationcathodecatalyst loadingperformancerecoverynitrogen dioxidesubzero cold-startsautomotiveisothermal water fill testsPEMFCsasymmetric &ampsymmetric GDMFreudenbergSGL 29BCdead-ended anode (DEA) modecathode catalyst layerI/C ratiodiffusion limitationconductivity limitationcomposite membraneselectrolytePEMfuel cellselectrolysersoxygen reductionoxygen evolutionPEM water electorolyzerporous structurecarbon-freecatalyst layerpolymer electrolyte fuel celloxygen transport resistanceoxygen reduction reaction kineticsplatinum ionomer interfaceionomer thin filmTechnology: general issuesChemical engineeringSt-Pierre Jeanedt1319339Du ShangfengedtSt-Pierre JeanothDu ShangfengothBOOK9910566481103321Proton Exchange Membrane Fuel Cells (PEMFCs)3033799UNINA