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Fuel cell cathode with Nafion and platinum: Calculating its overall performance with consideration of gas-and vapor-exchange processes in the gas-diffusion layer

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Abstract

The overall performance of cathodes with solid polymer electrolytes is calculated for three different cases in which gas-and vapor-exchange processes in the gas-diffusion layer are considered. First of all, specific results are presented for calculating the overall performance of oxygen and air cathodes under the assumption that external diffusion restrictions are completely absent. Then with these same conditions (i.e., all the parameters characterizing the active layer of the cathode remain the same), results of the overall performance are given for the idealized case in which gas exchange in the gas-diffusion layer causes the appearance of limiting currents, but in this case vapor exchange is completely ignored. Finally, an analysis is carried out to determine how vapor-exchange processes in the gas-diffusion layer alter overall cathode performance and what measures should be taken to reduce the significance of external diffusion restrictions.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    Yu. G. Chirkov

  2. Moscow Institute of Engineering Physics, Kashirskoe sh. 31, Moscow, 117409, Russia

    V. I. Rostokin

Authors
  1. Yu. G. Chirkov
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  2. V. I. Rostokin
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Correspondence to Yu. G. Chirkov.

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Original Russian Text © Yu.G. Chirkov, V.I. Rostokin, 2008, published in Elektrokhimiya, 2008, Vol. 44, No. 8, pp. 981–991.

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Chirkov, Y.G., Rostokin, V.I. Fuel cell cathode with Nafion and platinum: Calculating its overall performance with consideration of gas-and vapor-exchange processes in the gas-diffusion layer. Russ J Electrochem 44, 910–920 (2008). https://doi.org/10.1134/S1023193508080053

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  • DOI: https://doi.org/10.1134/S1023193508080053

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