Nanoscale Catalysts of Oxygen Reduction Based on Bimetallic Clusters in Hydrogen–Air Fuel Cell Operating Conditions

• Published in: Protection of metals and physical chemistry of surfaces Vol. 55; no. 2; pp. 277 - 282
• Main Authors: Grinberg, V. A., Emets, V. V., Modestov, A. D., Mayorova, N. A., Shiryaev, A. A., Vysotskii, V. V., Stolyarov, I. P., Pasynskii, A. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2019; Springer Nature B.V
• Subjects: Alloy plating; Automobile industry; Bimetals; Carbon black; Catalysis; Catalysts; Characterization and Evaluation of Materials; Chemistry and Materials Science; Clusters; Corrosion and Coatings; Fuel cells; Grain size; Hydrogen; Hydrogen oxygen fuel cells; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Intermetallic compounds; Manganese; Materials Science; Metallic Materials; Nanoscale and Nanostructured Materials and Coatings; Nickel; Platinum; Platinum metal alloys; Thermal degradation; Tribology
• ISSN: 2070-2051; 2070-206X
• DOI: 10.1134/S2070205119020072

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(CH
3
СO
2
)
4
(СH
3
СOОН), PtNi(CH
3
СO
2
)
4
(СH
3
СOОН), PtMn(CH
3
СO
2
)
4
(H
2
O), and PtZn(CH
3
СO
2
)
4
(СH
3
СOОН) 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.