Nanocomposite Li-ion battery anodes produced by the partial reduction of mixed oxides

被引：23

作者：

Limthongkul, P ^{[1
]}

Wang, H ^{[1
]}

Chiang, YM ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 07期

关键词：

D O I：

10.1021/cm0014280

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A method based on the thermochemical reduction of mixed oxides is demonstrated for creating ultrafine metal-ceramic composites for lithium storage. Mixed oxides containing a more noble metal, selected to be capable of alloying with lithium at potentials useful as a Li-ion battery anode, are partially reduced to form electrochemically active composites of the dispersed metal in a conductive oxide matrix. The starting oxides SbVO4 rutile and Sb-2-Mn2O7 distorted fluorite are discussed as examples. Materials are characterized using XRD, SEM, and TEM, and electrochemical tests are presented. Reversible charge capacities of 300-400 mAh/g (1800-2500 mAh/cm(3)) are shown to be possible in these systems.

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页码：2397 / 2402

页数：6

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