Abstract
The electrochemical and power characteristics of the membrane electrode assemblies with PtCo/C, PtMn/C, PtZn/C, and PtNi/C cathode bimetallic catalysts, prepared from PtCo(CH3СO2)4(СH3СOОН), PtNi(CH3СO2)4(СH3СOОН), PtMn(CH3СO2)4(H2O), and PtZn(CH3СO2)4(СH3СOОН) bimetallic clusters, as a component of hydrogen–oxygen and hydrogen–air fuel cells, were studied. It is shown that various types of platinum-metal alloys with the ratio Pt : M = 1 : 1 (where M = Co, Ni, Mn, Zn) uniformly distributed over the surface of the support are formed after thermal degradation of the bimetallic clusters deposited on carbon black, and the catalyst grain size is 2–5 nm. The synthesized PtCo/C, PtMn/C, and PtZn/C catalysts are superior to a commercial platinum catalyst in terms of their high specific activity and, therefore, are promising for application in hydrogen–air fuel cells.
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ACKNOWLEDGMENTS
Analytical characterization was carried out using the equipment of the Center for Collective Use of Physical Methods of Investigation of the A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences.
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Grinberg, V.A., Emets, V.V., Modestov, A.D. et al. Nanoscale Catalysts of Oxygen Reduction Based on Bimetallic Clusters in Hydrogen–Air Fuel Cell Operating Conditions. Prot Met Phys Chem Surf 55, 277–282 (2019). https://doi.org/10.1134/S2070205119020072
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DOI: https://doi.org/10.1134/S2070205119020072