Superior Lithium Storage Properties of Carbon Coated Li2MnSiO4 Cathodes

被引：29

作者：

Aravindan, V. ^{[1
,2
,3
]}

Karthikeyan, K. ^{[2
]}

Amaresh, S. ^{[2
]}

Lee, Y. S. ^{[2
]}

机构：

[1] Chonnam Natl Univ, Res Inst Catalysis, Kwangju 500757, South Korea

[2] Chonnam Natl Univ, Fac Appl Chem Engn, Kwangju 500757, South Korea

[3] Nanyang Technol Univ, Energy Res Inst, Singapore 637553, Singapore

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2011年 / 14卷 / 04期

关键词：

POSITIVE-ELECTRODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; LI-ION; LI2FESIO4; LIFEPO4; CHALLENGES; FE;

D O I：

10.1149/1.3543568

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li2MnSiO4 is synthesized by solid state reaction method under the optimized conditions of 900 degrees C in Ar atmosphere. Here, adipic acid is used as the source material for carbon. Powder X-ray diffraction measurements confirm the Li2MnSiO4 phase formation. The Li/Li2MnSiO4 cell delivers initial discharge capacity of 160 mAh g(-1) at C/20 rate. After a few initial cycles, the cell exhibits a stable discharge behavior similar to 140 mAh g(-1) with coloumbic efficiency over 90%. For the first time, we observed such stable discharge behavior for Li2MnSiO4 electrodes. Thus, improved stability is due to proper optimization of the compound as well as the source material for carbon. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3543568] All rights reserved.

引用

页码：A33 / A35

页数：3

共 21 条

[1] On the energetic stability and electrochemistry of Li2MnSiO4 polymorphs [J].