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

被引：1128
|
作者：
Geng, Dongsheng [1 ]
Chen, Ying [1 ]
Chen, Yougui [1 ]
Li, Yongliang [1 ]
Li, Ruying [1 ]
Sun, Xueliang [1 ]
Ye, Siyu [2 ]
Knights, Shanna [2 ]
机构：
[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada
[2] Ballard Power Syst Inc, Burnaby, BC V5J 5J8, Canada
来源：
ENERGY & ENVIRONMENTAL SCIENCE | 2011年 / 4卷 / 03期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
HIGH ELECTROCATALYTIC ACTIVITY; FUEL-CELLS; CARBON; CATALYSTS; ELECTRODE; GRAPHITE; ARRAYS; SITU;
D O I：
10.1039/c0ee00326c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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 degrees 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 mu g(Pt) cm(-2)). XPS characterization of these catalysts was tested to identify the active N species for ORR.
引用
收藏
页码：760 / 764
页数：5
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