文献类型：期刊文献

英文题名：Microwave synthesis of LiMg0.05Mn1.95O4 and electrochemical performance at elevated temperature for lithium-ion batteries

作者：Zhang, Huang[1];Liu, Dong[2];Zhang, Xiusheng[1];Zhao, Chongjun[1];Xu, Yunlong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Univ Texas Arlington, Dept Mat Sci & Engn, Arlington, TX 76019 USA

年份：2014

卷号：18

期号：2

起止页码：569

外文期刊名：JOURNAL OF SOLID STATE ELECTROCHEMISTRY

收录：;EI(收录号：20141117463000);WOS:【SCI-EXPANDED(收录号:WOS:000331909500029)】；

基金：The work is partially supported by Shanghai Nanotechnology Promotion Center (SNPC) (0852nm02300) and Shanghai International Science and Technology Cooperation Foundation (08230705600).

语种：英文

外文关键词：Lithium manganese oxide; Doping; Microwave sintering; Elevated temperature

摘要：The microwave sintering method is used to synthesize the spinel LiMg0.05Mn1.95O4 materials, and the structures and electrochemical performances of as-prepared powders are investigated. The powders resulting from the microwave synthesis are single crystalline phases with cubic spinel structure and exhibit outstanding structural stability. The discharge capacity and cycling stability of LiMg0.05Mn1.95O4 are found to be superior with lower capacity fading over the investigated 100 cycles at elevated temperature (55 A degrees C). The XRF and EIS measurements reveal that the doped LiMn2O4 synthesized by this simple method has lower dissolution of manganese into the electrolyte and higher electronic conductivity at high temperature for lithium ion batteries.