Carbon-supported cubic CoSe2 catalysts for oxygen reduction reaction in alkaline medium

Yongjun Feng (1, 2) , Nicolas Alonso-Vante (3)

1 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
2 State Key Laboratory of Chemical Resource Engineering
3 Electrocatalyse

A Carbon-supported CoSe2 nanocatalyst has been developed as an alternative non-precious metal electrocatalyst for oxygen reduction reaction (ORR) in alkaline medium. The catalyst was prepared via a surfactant-free route and its electrocatalytic activity for the ORR has been investigated in detail in 0.1 M KOH electrolyte at 25 degrees C using rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) techniques. The prepared catalyst showed promising catalytic activity towards ORR in a four-electron transfer pathway and higher tolerance to methanol compared to commercial Pt/C catalyst in 0.1 M KOH. To some extent, the increase of CoSe2 loading on the electrode favors a faster reduction of H2O2 intermediate to H2O. (C) 2012 Elsevier Ltd. All rights reserved.

Domaines: Catalyse; Chimie organique; Autre

Yongjun Feng, Nicolas Alonso-Vante. Carbon-supported cubic CoSe2 catalysts for oxygen reduction reaction in alkaline medium. Electrochimica Acta, 2012, 72, pp.129-133. ⟨10.1016/j.electacta.2012.04.003⟩. ⟨hal-00725030⟩