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Electrocatalysis of the Oxygen Reaction on Electrodes Prepared Using Disperse Synthetic Diamond Promoted with Cobalt Porphyrin and Its Pyropolymer

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Abstract

The oxygen electroreduction in acid solutions on electrodes of disperse synthetic diamond powder promoted with cobalt tetra(p-methoxyphenyl)porphyrin or its pyrolysis products is studied. A “floating” gas-diffusion electrode and an RDE of isotropic pyrocarbon are used in experiments; in the latter case, the catalyst is immobilized in a Nafion solution. Two types of diamond, with specific area of 5.8 and 170 m2/g, are used. The results are compared with similar data found for promoted acetylene black. A significant effect of the carbon support on electrocatalytical properties of cobalt porphyrin pyrolyzed on it is found.

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Zhutaeva, G.V., Radyushkina, K.A., Marinich, M.A. et al. Electrocatalysis of the Oxygen Reaction on Electrodes Prepared Using Disperse Synthetic Diamond Promoted with Cobalt Porphyrin and Its Pyropolymer. Russian Journal of Electrochemistry 37, 1059–1064 (2001). https://doi.org/10.1023/A:1012371030158

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