Instability of brannerite cathode materials upon lithium insertion

被引：16

作者：

Cushing, BL ^{[1
]}

Kang, SH ^{[1
]}

Goodenough, JB ^{[1
]}

机构：

[1] Univ Texas, Texas Mat Inst, ETC, Austin, TX 78712 USA

来源：

INTERNATIONAL JOURNAL OF INORGANIC MATERIALS | 2001年 / 3卷 / 07期

关键词：

brannerites; lithium-ion batteries; lithium insertion cathodes;

D O I：

10.1016/S1466-6049(01)00093-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Brannerite-type LiVMoO6, LiVWO6, Li0.8Zn0.2V1.2Mo0.8O6 and Li0.8Zn0.2V1.2W0.8O6 have been prepared and investigated as cathode materials in lithium-ion batteries. The materials initially intercalate between 1.6 and 2.4 lithium ions per formula unit with discharge capacities of 250, 160, 220 and 151 mAh g(-1), respectively. However, they are not suitable for secondary batteries. The intercalated brannerite phases are unstable; they undergo a partial decomposition to Li2MoO4 or similar products, which results in a continuous capacity fade with increasing cycle number or time at full discharge. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：875 / 879

页数：5

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