Journal
ELECTROCHIMICA ACTA
Volume 72, Issue -, Pages 129-133Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.04.003
Keywords
Non-precious metal; Oxygen reduction reaction; Alkaline medium; Methanol tolerance; Cubic cobalt selenide
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Funding
- University of Poitiers
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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.
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