An improved carbonate precipitation method for the preparation of Li1.2Ni0.12Co0.12Mn0.56O2 cathode material

被引：9
|
作者：
Xiang, Yanhong [1 ]
Yin, Zhoulan [1 ]
Li, Xinhai [2 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
来源：
IONICS | 2014年 / 20卷 / 02期
关键词：
Lithium-ion battery; Cathode material; Lithium-rich material; Carbonate precipitation; Ordered addition method; LITHIUM SECONDARY BATTERIES; EQUAL-TO; 0.7; ELECTROCHEMICAL PROPERTIES; ION BATTERIES; COPRECIPITATION METHOD; HIGH-CAPACITY; LI-ION; PERFORMANCE; LINI0.5MN0.5O2;
D O I：
10.1007/s11581-013-0981-3
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：
The precursor of (Ni0.15Co0.15Mn0.7)CO3 has been synthesized by a carbonate precipitation method, which was used to prepare high-capacity cathode material Li1.2Ni0.12Co0.12Mn0.56O2 for lithium-ion batteries. Carbonate precipitation was conducted using NH4HCO3 solution as the precipitation reagent. Two different feeding ways were adopted during the precipitation process. The physical properties of the precursor and the resulting Li1.2Ni0.12Co0.12Mn0.56O2 were characterized in detail, and the electrochemical properties of the prepared Li1.2Ni0.12Co0.12Mn0.56O2 powers were evaluated. It was found that the structural and morphological properties of the precursor and the final material were effectively improved by the ordered addition method. Electrochemical studies confirmed that the Li1.2Ni0.12Co0.12Mn0.56O2 synthesized by ordered addition method exhibited a higher capacity of 287.3 mAh g(-1), and the capacity retention after 30 cycles was 90.5 %.
引用
收藏
页码：163 / 168
页数：6
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