Issue 3, 2011
From the journal:

Energy & Environmental Science

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

Dongsheng Geng,a   Ying Chen,a   Yougui Chen,a   Yongliang Li,a   Ruying Li,a   Xueliang Sun,*a   Siyu Yeb  and  Shanna Knightsb  

* Corresponding authors

a Department of Mechanical and Materials Engineering, University of Western Ontario, 1151 Richmond Street N., London, Ontario, Canada
E-mail: xsun@eng.uwo.ca
Fax: +1-519-6613020
Tel: +1-519-6612111, ext. 87759

b Ballard Power Systems Inc., 9000 Glenlyon Parkway, Burnaby, BC, Canada

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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Article information

DOI
https://doi.org/10.1039/C0EE00326C
Article type
Paper
Submitted
30 Jul 2010
Accepted
13 Dec 2010
First published
08 Feb 2011

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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