کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
188607 | 459663 | 2012 | 5 صفحه PDF | دانلود رایگان |
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 °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.
► Cubic CoSe2 a non-precious metal electrocatalyst for oxygen reduction in KOH.
► The catalyst shows four-electron transfer pathway in overall reaction.
► Catalyst has higher methanol tolerance than commercial Pt/C catalyst.
Journal: Electrochimica Acta - Volume 72, 30 June 2012, Pages 129–133