High performance Li-O2 battery using γ-MnOOH nanorods as a catalyst in an ionic-liquid based electrolyte

被引：35

作者：

Guo, Ziyang

Zhu, Guannan

Qiu, Zijie

Wang, Yonggang ^{[1
]}

Xia, Yongyao

机构：

[1] Fudan Univ, Dept Chem, Inst New Energy, Shanghai 200433, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 25卷

基金：

中国国家自然科学基金;

关键词：

gamma-MnOOH nanorods; Ionic-liquid based electrolyte; Li-O-2; battery; LITHIUM-AIR BATTERIES; ELECTROCATALYTIC ACTIVITY; GRAPHENE NANOSHEETS; DISCHARGE;

D O I：

10.1016/j.elecom.2012.09.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li-O-2 batteries using the ionic-liquid based electrolyte consisting of 1-ethyl-3-methylimidazolium tetrafluoroborate and lithium bis((trifluoromethyl)sulfonyl)imide were investigated with carbon catalyst (Super P), alpha-MnO2 nanorods/carbon composite catalyst (Super P + alpha-MnO2) and gamma-MnOOH nanorods/carbon composite catalyst (Super P + gamma-MnOOH). It is demonstrated that gamma-MnOOH nanorods display higher electrocatalytic performance for O-2 reduction in ionic-liquid based electrolyte, compared with that of Super P and alpha-MnO2 nanorods. The Li-O-2 battery using gamma-MnOOH nanorods/carbon composite as catalyst displays a high discharge capacity of 9400 mAh/g at a low current density of 50 mA/g and can be stably cycled 100 times with a current density of 200 mA/g. (C) 2012 Elsevier B.V. All rights reserved.

引用

收藏

页码：26 / 29

页数：4

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