Improved catalytic performance of nitrided Co-Ti and Fe-Ti catalysts for oxygen reduction as non-noble metal cathodes in acidic media

Fengxiang Yin, Kazuhiro Takanabe, Masao Katayama, Jun Kubota, Kazunari Domen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

M-Ti/carbon black electrocatalysts (M: Mn, Fe, Co, Ni, Cu, Mo) were prepared by the polymerized complex (PC) method and subsequent nitridation under ammonia flow, and were investigated as cathodes for the oxygen reduction reaction (ORR) in 0.1 M H2SO4 aq. Among the metals investigated, Co and Fe gave high onset potentials of 0.86 and 0.87 V vs. RHE, respectively. In comparison with the Co-only catalyst, the Co-Ti catalyst showed higher current, reflecting high density of Co-related active sites. The presence of Ti was also essential for the electrode stability under severe acidic and oxidizing conditions.

Original languageEnglish (US)
Pages (from-to)1177-1179
Number of pages3
JournalElectrochemistry Communications
Volume12
Issue number9
DOIs
StatePublished - Sep 1 2010

Keywords

  • Cobalt
  • Iron
  • Non-noble metal cathode
  • Oxygen reduction reaction
  • Polymer electrolyte fuel cell
  • Titanium

ASJC Scopus subject areas

  • Electrochemistry

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