Abstract
In this paper, we study the electrocatalytic activity and stability of materials in the Pt/Ti1 – xRuxO2 – δ system, in oxygen electroreduction reactions, including under operating conditions in a fuel cell (FC). All the obtained electrocatalytic materials are shown to be stable in the electrode potential range of operation of a hydrogen-air FC, while the electroreduction of oxygen proceeds mainly by a four-electron mechanism. The power characteristics of the FC with the obtained electrocatalyst are comparable to those of a FC with a commercial electrocatalyst, while the stability of the obtained electrocatalysts is 5–6 times higher than that of Pt/C catalysts.
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ACKNOWLEDGMENTS
The work was carried out using the resources of the NTI Competence Center on Technologies for New and Mobile Energy Sources at the IPCP RAS and using the equipment of the Analytical Center for Collective Use of the IPCP RAS.
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The work was partially carried out on the topic of the State assignment, state registration no. AAAA-A19-119061890019-5, temkart 0089-2019-007 and was supported by the Ministry of Science and Higher Education of the Russian Federation, agreement no. 05.605.21.0188 of December 3, 2019, RFMEFI60519X0188.
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Belmesov, A.A., Levchenko, A.V., Baranov, A.A. et al. Pt/Ti1 – xRuxO2 – δ Cathodic Electrocatalysts for Fuel Cells. Nanotechnol Russia 15, 701–707 (2020). https://doi.org/10.1134/S199507802006004X
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DOI: https://doi.org/10.1134/S199507802006004X