Formation of Li1+nV3O8/β-Li1/3V2O5/C nanocomposites by carboreduction and the resulting improvement in Li capacity retention

被引：22

作者：

Dubarry, M ^{[1
]}

Gaubicher, J ^{[1
]}

Moreau, P ^{[1
]}

Guyomard, D ^{[1
]}

机构：

[1] Inst Mat Jean Rouxel, F-44322 Nantes 3, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2006年 / 153卷 / 02期

关键词：

D O I：

10.1149/1.2142210

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The formation of the xerogel precursor of Li1+alpha V3O8 within a suspension of carbon black allows the synthesis of Li1+alpha+xV3O8/beta-Li1/3V2O5/C nanocomposites upon heating under argon at 350 degrees C for a few minutes. The intimate contact of the active material with carbon particles ensures a limitation of the particle growth, a reduction-insertion of the pristine Li1+alpha V3O8 compound along with the formation of beta-Li1/3V2O5, and an efficient electronic transport to the active materials. The electrochemical performance of these nanocomposites is significantly better in terms of both initial capacity and capacity retention upon cycling than that of standard Li1+alpha V3O8. (c) 2005 The Electrochemical Society. [DOI: 10.1149/1.2142210] All rights reserved.

引用

页码：A295 / A300

页数：6

共 34 条

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