Abstract
The activity of composite catalysts, Pt and Co-porphyrin- or Fe-phthalocyanine-based pyropolymers on low-disperse carbonaceous carriers (graphite, carbon black), in the oxygen and H2O2electroreduction in 1 M KOH is studied. Kinetic parameters of oxygen electroreduction are determined from experiments with rotating disk and model floating electrodes. Possible mechanism of the oxygen electroreduction reaction is discussed; it includes a slow stage of attachment of the second electron on the pyropolymer/carbonaceous carrier or joining the first electron (under the conditions of Temkin adsorption) on the platinum/graphite catalysts.
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Tarasevich, M.R., Zhutaeva, G.V., Radina, M.V. et al. Effect of Carbonaceous Carrier and Promoter on Electrocatalytical Properties of Composite Cathodes in Fuel Cells with Alkaline Electrolyte. Russian Journal of Electrochemistry 39, 1094–1098 (2003). https://doi.org/10.1023/A:1026175521041
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DOI: https://doi.org/10.1023/A:1026175521041