Low-temperature hydrothermal synthesis of spinel-type lithium manganese oxide nanocrystallites

被引：32
作者：
Zhang, YC
Wang, H [1 ]
Xu, HY
Wang, B
Yan, H
Ahniyaz, A
Yoshimura, M
机构：
[1] Beijing Polytech Univ, China Educ Minist, Key lab Adv Funct Mat, Beijing 100022, Peoples R China
[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
来源：
SOLID STATE IONICS | 2003年 / 158卷 / 1-2期
关键词：
lithium manganese oxides; spinel; hydrothermal method;
D O I：
10.1016/S0167-2738(02)00755-5
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：
A mild hydrothermal method has been developed to synthesize spinel-type lithium manganese oxide nanocrystallites directly from commercial LiOH, Mn(NO3)(2) and H2O2 at 90-110 degreesC for 8 h. The as-prepared products were characterized by X-ray diffraction (XRD), inductively coupled plasma-atomic emission spectroscopy and chemical analysis. The analysis results indicated that spinel-type lithium manganese oxides with the compositions of Li1 + xMn2 - xO4 - delta (0.09 less than or equal to x less than or equal to 0.28, delta < 0.05) could be obtained by varying the synthesis parameters, such as the concentration of LiOH solution used. Transmission electron microscopy (TEM) images showed that the obtained spinet at 110 degreesC was cubic-shaped with the average size of around 40-50 run. Finally, the thermal behaviors of the obtained lithium-rich spinel Li1.28Mn1.72O3.99 were investigated by thermogravimetric analysis (TG) and differential thermal analysis (DTA). (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：113 / 117
页数：5
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