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Energy & Environmental Science

Article . 2011 . Peer-reviewed

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High oxygen-reduction activity and durability of nitrogen-doped graphene

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2011Publisher:Royal Society of Chemistry (RSC)Journal:Energy & Environmental Science, volume 4, page 760 (issn: 1754-5692, eissn: 1754-5706,

Authors: Yougui Chen; Shanna Knights; Siyu Ye; Ruying Li; Ying Chen; Dongsheng Geng; Xueliang Sun; +1 Authors

doi: 10.1039/c0ee00326c

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.

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