Modification of Li[Li0.2Ni0.2Mn0.6]O2 as Cathode Material for Rechargeable Lithium Batteries by Acid-Leaching

被引：0
|
作者：
Du Ke [1 ]
Huang Xia [1 ]
Yang Fei [1 ]
Hu Guo-Rong [1 ]
Peng Zhong-Dong [1 ]
机构：
[1] Cent S Univ, Coll Met Sci & Engn, Changsha 410083, Peoples R China
来源：
CHINESE JOURNAL OF INORGANIC CHEMISTRY | 2012年 / 28卷 / 05期
关键词：
lithium-ion battery; cathode material; solid state method; acid leaching; ELECTROCHEMICAL-BEHAVIOR; HIGH-CAPACITY; ELECTRODES;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In order to improve the initial discharge efficiency of Li[Li0.2Ni0.2Mn0.6]O-2 as cathode material for rechargeable lithium batteries, Li [Li0.2Ni0.2Mn0.6]O-2 synthesized by a solid state method was preconditioned in acids. The product was characterized by XRD and SEM. It is found that the first discharge efficiency of Li[Li0.2Ni0.2Mn0.6]O-2 after acid treatment had been greatly improved, but the mid-voltage sharply decreased. The treatment with 0.5 mol.L-1 HNO3 for 5 h was the best result, the efficiency reached 86.7%, meanwhile, the discharge capacity reached maximum faster than before. The reason of acid leaching modification was attributed to the appearance of the spinel structure Li4Mn5O12 phase with rich lithium.
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页码：983 / 988
页数：6
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