An electrochemical investigation of Li intercalation in the sol-gel LiMn2O4 spinel oxide

被引：35

作者：

Bach, S ^{[1
]}

Farcy, J ^{[1
]}

Pereira-Ramos, JP ^{[1
]}

机构：

[1] CNRS UM 28, LECSO, F-94320 Thiais, France

来源：

SOLID STATE IONICS | 1998年 / 110卷 / 3-4期

关键词：

sol-gel; manganese; LiMn2O4; lithium batteries;

D O I：

10.1016/S0167-2738(98)00125-8

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：

An alternative approach for obtaining the LiMn2O4 spinel phase is provided by the use of the sol-gel method in aqueous solution. The main electrochemical properties of the sol-gel LiMn2O4 phase are reported. In addition to chronopotentiometric and voltammetric experiments, the kinetics of the electrochemical insertion-extraction of lithium in LixMn2O4 (0.25 < x < 1) has been investigated using ac impedance spectroscopy. The strong variation of the chemical diffusion coefficient D-Li vs x, in the range 10(-8)-10(-11) cm(2) s(-1) (D-Li is found to be maximum for x = 0.55) is critically discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：193 / 198

页数：6

共 23 条

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