Controlled Preparation and Characterization of Spherical LiNi0.5Mn1.5O4 Cathode Material for Lithium-Ion Batteries

被引：24
作者：
Gao, Jian [1 ]
Li, Jianjun [1 ]
Jiang, Changyin [1 ]
Wan, Chunrong [1 ]
机构：
[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 102201, Peoples R China
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 07期
基金：
美国国家科学基金会;
关键词：
discharges (electric); electrochemical electrodes; lithium compounds; nickel compounds; powders; precipitation; secondary cells; ELECTROCHEMICAL PROPERTIES; SECONDARY BATTERIES; ELECTRODE MATERIALS; RATE CAPABILITY; SPINEL; PERFORMANCE; COPRECIPITATION; LINIXMN2-XO4;
D O I：
10.1149/1.3432599
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Spinel spherical LiNi0.5Mn1.5O4 with high capacity and high tap density is synthesized by controlled precipitation and solid-state reaction. Specifically, through controlling the component of the precursor, the product is the pure LiNi0.5Mn1.5O4 phase. The as-prepared LiNi0.5Mn1.5O4 powders are spherical, and the tap density reaches 2.03 g cm(-3). LiNi0.5Mn1.5O4 can deliver an initial discharge capacity of 136.7, 129.2, and 108.8 mAh g(-1) at 0.2C, 1.0C, and 5.0C rates, respectively, between 3.5 and 5 V, which also demonstrates excellent cyclic performance. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3432599] All rights reserved.
引用
收藏
页码：A899 / A902
页数：4
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