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Investigations of the O2 Reduction Reaction at the Platinum/Nafion InterfaceUsing a Solid State Electrochemical Cell

机译:使用固态电化学电池研究铂/ Nafion界面的O2还原反应

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Research in solid polymer electrolyte fuel cells is gaining momentum because ofthe prospects of attaining high energy efficiencies and power densities, essential for transportation and space applications. The most advanced solid polymer electrolytes for these fuel cells are the perfluorosulfonate inonmers (PFSIs) such as duPont's Nafion and the Dow PFSIs. The high oxygen solubility, chemical stability, proton conductivity and permselectivity exhibited by Nafion and the Dow PFSi's make them ideal candidates from fluorinated acids enhances oxygen reduction kinetics. The objectives of this work were to determine the concentration and diffusion coefficient of oxygen in Nafion, and the electrode kinetic parameters for the reduction of oxygen at the Pt/Nafion interface under totally solid state conditions (i.e. no contacting liquid electrolyte phase). Keywords: Reduction kinetics, Solid state electrochemistry, Ultramicroelectrodes. (js)

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