Pt/Ti1 – xRuxO2 – δ Cathodic Electrocatalysts for Fuel Cells

In  this  paper,  we  study  the  electrocatalytic  activity  and stability of materials in the Pt/Ti 1 – x Ru x O 2 – 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 e...

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Veröffentlicht in:Nanotechnologies in Russia 2020-11, Vol.15 (11-12), p.701-707
Hauptverfasser: Belmesov, A. A., Levchenko, A. V., Baranov, A. A., Nadkhina, S. E., Melnikov, A. P.
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Sprache:eng
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Zusammenfassung:In  this  paper,  we  study  the  electrocatalytic  activity  and stability of materials in the Pt/Ti 1 – x Ru x O 2 – 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.
ISSN:1995-0780
1995-0799
DOI:10.1134/S199507802006004X