Nitrogen-doped graphene nanosheets as cathode materials with excellent electrocatalytic activity for high capacity lithium-oxygen batteries

被引：238

作者：

Li, Yongliang ^{[1
]}

Wang, Jiajun ^{[1
]}

Li, Xifei ^{[1
]}

Geng, Dongsheng ^{[1
]}

Banis, Mohammad N. ^{[1
]}

Li, Ruying ^{[1
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 18卷

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：

Lithium batteries; Energy conversion; Graphene; Nitrogen-doped graphene; Oxygen reduction; CARBON NANOTUBES; AIR; ELECTRODES;

D O I：

10.1016/j.elecom.2012.01.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nonaqueous lithium-oxygen battery with nitrogen-doped graphene nanosheets (N-GNSs) as cathode materials delivered a discharge capacity of 11660 mAh g(-1), which is about 40% higher than that with the pristine graphene nanosheets (GNSs). The electrocatalytic activity of N-GNSs for oxygen reduction in the nonaqueous electrolyte is 2.5 times as that of GNSs. The excellent electrochemical performance of N-GNSs is attributed to the defects and functional groups as active sites introduced by nitrogen doping. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：12 / 15

页数：4

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