Synthesis and characterization of spinel LiMn2O4 for lithium secondary battery

被引：26

作者：

Jang, SW

Lee, HY

Shin, KC

Lee, SM ^{[1
]}

Lee, JK

Lee, SJ

Baik, HK

Rhee, DS

机构：

[1] Kangweon Natl Univ, Dept Mat Engn, Kangwon, South Korea

[2] Yonsei Univ, Dept Engn Met, Seoul 120749, South Korea

[3] Kangweon Natl Univ, Dept Environm Engn, Kangwon, South Korea

来源：

JOURNAL OF POWER SOURCES | 2000年 / 88卷 / 02期

关键词：

LiMn2O3; pretreatment; lithium-ion; particle size; rechargeable battery; sol-gel;

D O I：

10.1016/S0378-7753(00)00374-8

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：

The preparation and characterization of spinel LiMn2O4 have been studied. Spinel lithium manganese oxides are prepared by a sol-gel method using LiNO3 and Mn(CH3COO)(2) . 4H(2)O as starting materials in which the obtained gel is heated at various temperatures after pretreatment at 350 degrees C or without pretreatment in air. The LiMn2O4 samples prepared with pretreatment have uniform microsized particles while those obtained without pretreatment have agglomerated particles of irregular shapes. The thermal pretreatment at 350 degrees C improves the electrochemical behaviour in terms of discharge capacity and rate capability. The results can be correlated with an increase in lithium surface reaction sites in these materials, as inferred by this small grain size and large surface area. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：274 / 277

页数：4

共 6 条

[1] A new three-volt spinel Li1+xMn1.5Ni0.5O4 for secondary lithium batteries [J].