Hydrothermal synthesis of LiNi0.5Mn1.5O4 sphere and its performance as high-voltage cathode material for lithium ion batteries

被引：24

作者：

Cheng, Jianliang ^{[1
]}

Li, Xinhai ^{[1
]}

Wang, Zhixing ^{[1
]}

Guo, Huajun ^{[1
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期

基金：

中国国家自然科学基金;

关键词：

LiNi0.5Mn1.5O4; sphere; Cathode material; High-voltage; Lithium ion battery; LI; SPINEL;

D O I：

10.1016/j.ceramint.2015.11.031

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The LiNi0.5Mn1.5O4 spheres are prepared via hydrothermal route followed by high-temperature lithiation. The morphology of the Ni0.25Mn0.75CO3 precursor is optimized by adjusting the temperature and metal concentrations during the hydrothermal reaction. The results indicate that the sphere structure is easy to obtain while its size is tunable, especially in different hydrothermal temperatures. After lithiation, the prepared samples are indexed with pure-phase spinel LiNi0.5Mn1.5O4 and the elemental distribution shows no segregation. As used as high-voltage cathode material for lithium ion batteries, the prepared material shows considerable cycle performance, possessing 126 mAh g(-1) at 0.1C in the voltage range of 3.0-4.95 V, and maintaining 71% capacity retention. The sample also exhibits good rate capability, delivering 58 mAh g(-1) at 5C. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：3715 / 3719

页数：5

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