Cobalt-iron(II,III) oxide hybrid catalysis with enhanced catalytic activities for oxygen reduction in anion exchange membrane fuel cell

Chen Hao Wang, Chih Wei Yang, Yu Chuan Lin, Sun Tang Chang, Shery L.Y. Chang

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

(Graph Presented) Carbon-supported cobalt-iron(II,III) oxide (Co-Fe3O4) hybrid nanoparticles (Co-Fe3O4/C) are prepared as efficient catalysis of the oxygen reduction reaction (ORR) in alkaline media and in the cathode of the anion exchange membrane fuel cell (AEMFC). The ORR activity of Co-Fe3O4/C gives an electron transfer number of 3.99, revealing almost perfect four-electron transfer, over a very wide range of potentials of 0.1 -0.8 V. Co-Fe3O4/C is more durable than Pt/C in alkaline media, undergoing almost no degradation in 10,000 s at 0.76 V (vs. RHE). The potential-cycling method shows that the rate of decline of Co-Fe3O4/C is only 5% decay after 10,000 cycles. The AEMFC using Co-Fe3O4/C also shows good performance and excellent durability in this study.

Original languageEnglish (US)
Pages (from-to)147-154
Number of pages8
JournalJournal of Power Sources
Volume277
DOIs
StatePublished - Mar 1 2015
Externally publishedYes

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Keywords

  • Anion exchange membrane fuel cell
  • Metal oxides
  • Non-precious metal catalyst
  • Oxygen reduction reaction

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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