The effect of carbon black mixture composition on the structural and electrochemical characteristics of gas diffusion electrodes for electrosynthesis of hydrogen peroxide


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Gas-diffusion electrodes containing polytetrafluoroethylene, acetylene black A437E and its mixtures with two types of furnace black (P702 and P268E) with different size of particles are studied. The electrode capacitance, the average diameter and volume of pores and their surface area are investigated as a function of the electrode composition. The kinetic characteristics of electrodes in the oxygen electroreduction are assessed. The slope of polarization curves in Tafel coordinates and the transfer coefficient value are shown to be virtually independent of the electrode composition. The preparative synthesis of Н2О2 is carried out.

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G. Kolyagin

Institute of Chemistry and Chemical Technology, Siberian Branch

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Email: kolyagin@icct.ru
俄罗斯联邦, Akademgorodok 50, bld. 24, Krasnoyarsk, 660036

V. Kornienko

Institute of Chemistry and Chemical Technology, Siberian Branch

Email: kolyagin@icct.ru
俄罗斯联邦, Akademgorodok 50, bld. 24, Krasnoyarsk, 660036

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