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Determination of the double-layer capacity of porous nickel in KOH in the presence of faradaic current

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Abstract

Experimental and analytical techniques to determine the double-layer capacity of porous electrodes in the presence of faradaic effects are discussed. A triangular voltage sweep method was used with commercially available porous nickel plaque electrodes in KOH. No elaborate purification pretreatments were needed. A minimum double-layer capacity of about 28μF cm2 was determined at −0.40 V versus Hg/HgO which is close to the pzc reported for nickel. Overall the results agreed well with literature values for solid nickel.

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  1. Electrochemistry Department, Research Laboratories, General Motors Corporation, 48090, Warren, Michigan, USA

    E. G. Gagnon

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  1. E. G. Gagnon
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Gagnon, E.G. Determination of the double-layer capacity of porous nickel in KOH in the presence of faradaic current. J Appl Electrochem 6, 95–98 (1976). https://doi.org/10.1007/BF00615373

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  • DOI: https://doi.org/10.1007/BF00615373

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