Electrochemical characteristics of graphene/manganese oxide composite catalyst for Li-oxygen rechargeable batteries

被引：32

作者：

Kalubarme, Ramchandra S. ^{[1
]}

Ahn, Chang-Ho ^{[1
]}

Park, Chan-Jin ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Mat Sci & Engn, Kwangju 500757, South Korea

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Li-O-2; battery; Graphene; Manganese oxide; Surface area; LITHIUM-AIR BATTERIES; ELECTROCATALYTIC ACTIVITY; SURFACE-AREA; REDUCTION; GRAPHENE; NANOSTRUCTURES; ELECTRODE;

D O I：

10.1016/j.scriptamat.2012.12.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene/MnO2 composite was obtained by hydrothermal oxidation of the Mn-precursor on a graphene surface. The composite showed a fine dispersion of MnO2 nanorods over graphene nanosheets (GNs). The addition of MnO2 to GNs accelerated the oxygen reduction in the cathodes of Li-O-2 cells and promoted Li2O2 catalysis efficiently, compared with the pristine GNs. The power densities of the composite and the pristine GNs were 13.27 and 9.72 mW cm(-2), respectively. In addition, the cell containing GNs/MnO2 electrode exhibited stable cyclic performance. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：619 / 622

页数：4

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