Synthesis of spinel Li4Mn5O12 with an aid of mechanochemical treatment

被引：25

作者：

Tanaka, Y ^{[1
]}

Zhang, QW ^{[1
]}

Saito, F ^{[1
]}

机构：

[1] Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

POWDER TECHNOLOGY | 2003年 / 132卷 / 01期

关键词：

grinding; mechanochemistry; structural change; spinel; lithium manganese oxide; mechanochemically assisted synthesis;

D O I：

10.1016/S0032-5910(03)00009-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mechanochemically assisted method for synthesizing spinel Li4Mn5O12 has been proposed in this paper. The method involves grinding a mixture of LiOH.H2O and gamma-MnO2 in ambient air, followed by heating the ground product. The grinding of the mixture was conducted by using a planetary ball mill, causing their structural changes into amorphous state, which is lithium manganese oxides hydrated (Li-MnO.nH(2)O). The ground product can be crystallized into lithium manganese oxide by heating at about 400 degreesC or more. Heating the ground product at around 600 degreesC for 12 h results in the formation of pure phase of the spinel. Temperature in the heating stage is an important factor in crystallization of the spinel from the amorphous mixture, and heating up to about 600 degreesC is suitable for the formation of pure phase spinel. The product synthesized is very fine powder with mean grain size of 100 nm. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：74 / 80

页数：7

共 23 条

[1] Effect of the lactate precursor on the microstructure of Li1+xMn2-xO4 with 0≤x≤0.33 [J].