Storage characteristics of cathodes for Li-ion batteries

被引：154

作者：

Pistoia, G

Antonini, A

Rosati, R

Zane, D

机构：

[1] Ctro. Stud. per la Elettrochimica C., C.N.R., 00161 Rome

来源：

ELECTROCHIMICA ACTA | 1996年 / 41卷 / 17期

关键词：

storage of Li cells; self-discharge; ternary oxide cathodes; impedance spectroscopy; organic electrolytes;

D O I：

10.1016/0013-4686(96)00122-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The storage characteristics of LiMn2O4, LiCoO2 and LiNiO2 have been evaluated in liquid electrolytes commonly used in lithium-ion batteries. All materials show self-discharge phenomena even at moderate oxidation levels. Three mechanisms are thought to be operating in this process: (a) electrolyte decomposition; (b) spontaneous Li+ reinsertion due to instability of the delithiated cathodes; (c) solubility by corrosion. Mechanisms (a) and (c) have been much in evidence in the impedance tests. Copyright (C) 1996 Elsevier Science Ltd.

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页码：2683 / 2689

页数：7

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