Preparation, structure and electrochemical properties of spinel Li1-xMn2-yO4 cathode material for lithium ion batteries

被引：13

作者：

Huang, KL ^{[1
]}

Peng, B

Chen, ZH

Huang, PY

机构：

[1] Cent S Univ Technol, Dept Chem, Changsha 410083, Peoples R China

[2] Cent S Univ Technol, Inst Nonequilibrium Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2000年 / 62卷 / 1-2期

关键词：

lithium manganese oxide; Pechini process; nonstoichiometric defect; lithium ion battery;

D O I：

10.1016/S0927-0248(99)00150-6

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The spinel LiMn2O4 has been synthesized at low temperature from polymeric precursors through Pechini process. In combination with element content determination and valence evaluation, auto-calibration method has firstly been introduced to calculate the amounts of LiMn2O4 with spinel and Mn2O3 with bixbyite in the species, and then metal-deficient nonstoichiometric model of [Li(1-x)square(x)](8a)[Mn(III)(p)Mn(IV)(q)square(y)]O-16d(4) has been proposed to describe the structure of the prepared sample. Electrical properties of LiMn2O4 have been depicted by charging and discharging curves and cyclic voltammograms. When calcining temperature is at 500 degrees C, vacancy amounts of Li+ ion in the defect model is 0.3, that of Mn is 0.1 and capacity of the material is 127.8 mAh g(-1). (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：177 / 185

页数：9

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