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

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• 作者：Yongjun Feng^a ; ^b ; ¹ ; Nicolas Alonso-Vante^a ; ¹ ; ^{Nicolas.Alonso.Vante@univ-poitiers.fr}
• 关键词：Non-precious metal ; Oxygen reduction reaction ; Alkaline medium ; Methanol tolerance ; Cubic cobalt selenide
• 刊名：Electrochimica Acta
• 出版年：2012
• 期刊代码：30_00134686
• 类别：ch
• 出版时间：30 June, 2012
• 卷：72
• 期：Complete
• 页码：129-133
• 文件大小：866 K

摘要

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 掳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.