Electrochemical performance of cathodes based on LiMn2O4 spinel obtained by combustion synthesis

被引：23

作者：

Santiago, EI ^{[1
]}

Amancio, ST ^{[1
]}

Bueno, PR ^{[1
]}

Bulhoes, LOS ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF POWER SOURCES | 2001年 / 97-8卷

基金：

巴西圣保罗研究基金会;

关键词：

X-ray diffraction; charge-discharge curves; PVDF;

D O I：

10.1016/S0378-7753(01)00636-X

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：

Composite cathodes have been fabricated based on LiMn2O4 spinel powders, which were synthesized by combustion process and characterized by X-ray diffraction as a pure phase. The electrochemical response of the electrode was analyzed by cyclic voltammetry, chronopotentiometric curves and electrochemical impedance spectroscopy (EIS). Cyclic voltammograms showed two reversible processes, which is the typical response of LiMn2O4. The charge-discharge curves showed two plateaux with the charge density of 107 mAh g(-1). From the EIS data the Li+ diffusion coefficient was determined. (C) 2001 Elsevier Science B.V. All rights reserved.

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页码：447 / 449

页数：3

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