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Issue 3, 2011
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High oxygen-reduction activity and durability of nitrogen-doped graphene

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Abstract

Nitrogen-doped graphene as a metal-free catalyst for oxygen reduction was synthesized by heat-treatment of graphene using ammonia. It was found that the optimum temperature was 900 °C. The resulting catalyst had a very high oxygen reduction reaction (ORR) activity through a four-electron transfer process in oxygen-saturated 0.1 M KOH. Most importantly, the electrocatalytic activity and durability of this material are comparable or better than the commercial Pt/C (loading: 4.85 µgPt cm−2). XPS characterization of these catalysts was tested to identify the active N species for ORR.

Graphical abstract: High oxygen-reduction activity and durability of nitrogen-doped graphene

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Publication details

The article was received on 30 Jul 2010, accepted on 13 Dec 2010 and first published on 08 Feb 2011


Article type: Paper
DOI: 10.1039/C0EE00326C
Citation: Energy Environ. Sci., 2011,4, 760-764
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    High oxygen-reduction activity and durability of nitrogen-doped graphene

    D. Geng, Y. Chen, Y. Chen, Y. Li, R. Li, X. Sun, S. Ye and S. Knights, Energy Environ. Sci., 2011, 4, 760
    DOI: 10.1039/C0EE00326C

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