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

被引：1116

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

页码：760 / 764

页数：5

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