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Non-precious Co3O4 nano-rod electrocatalyst for oxygen reduction reaction in anion-exchange membrane fuel cells

Authors Xu, Jianbo View this author's profile
Gao, Ping View this author's profile
Zhao, Tianshou View this author's profile
Issue Date 2012
Source Energy & environmental science , v. 5, (1), 2012, p. 5333-5339
Summary We report preparation of carbon-supported Co 3O 4 electrocatalysts with nano-rods and spherical structures by the solvent-mediated morphological control method. The catalytic properties of the prepared catalysts for the oxygen reduction reaction (ORR) in alkaline media are investigated. We show that the ORR catalytic activity of the prepared catalysts is sensitive to the number and activity of surface-exposed Co 3+ ions that can be tailored by the morphology of cobalt oxides. In particular, we demonstrate that the non-precious Co 3O 4 electrocatalyst with the nano-rod structure (∼12 nm in length and ∼5.1 nm in diameter) prepared in the mixed solvent of water to dimethylformamide ratio of 1:1 exhibits a higher current density than a much more expensive palladium-based catalyst does at the low potential region. © 2011 The Royal Society of Chemistry.
ISSN 1754-5692
Language English
Format Article
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