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Electrochemical methods for the in situ regeneration of active surface area of aged fuel cell type electrodes

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Abstract

One of the main reasons for the decay in performance of phosphoric acid fuel cells (150° C) is the decrease in surface area of the platinum catalyst with time. It was found that fast potentiostatic cycling (50 mVs−1) could regenerate the surface area of the Pt and recover the performance. The mechanism of regeneration is likely to be charge injection, resulting in electrostatic repulsion of the platinum particles in the loosely held agglomerates.

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Author notes

  1. S. Srinivasan

    Present address: Electronics Division, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA

Authors and Affiliations

  1. Department of Energy and Environment, Brookhaven National Laboratory, 11973, Upton, New York, USA

    H. Olender, W. E. O'Grady, H. S. Isaacs & S. Srinivasan

  2. Department of Chemistry, The City University, Northampton Square, London, UK

    A. C. C. Tseung

Authors
  1. H. Olender
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  2. W. E. O'Grady
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  3. H. S. Isaacs
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  4. S. Srinivasan
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  5. A. C. C. Tseung
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Additional information

This work was performed under the auspices of the US Department of Energy.

Visiting scientist at the Brookhaven National Laboratory in the summers of 1976 and 1977.

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Olender, H., O'Grady, W.E., Isaacs, H.S. et al. Electrochemical methods for the in situ regeneration of active surface area of aged fuel cell type electrodes. J Appl Electrochem 12, 135–145 (1982). https://doi.org/10.1007/BF00616895

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  • DOI: https://doi.org/10.1007/BF00616895

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