Graphene modified Li- rich cathode material Li[Li0.26Ni0.07Co0.07Mn0.56]O2 for lithium ion battery

被引：6
|
作者：
Li, Xiangjun [1 ]
Xin, Hongxing [1 ]
Qin, Xiaoying [1 ]
Yuan, Xueqin [1 ]
Li, Di [1 ]
Zhang, Jian [1 ]
Song, Chunjun [1 ]
Wang, Ling [1 ]
Sun, Guolong [1 ]
Liu, Yongfei [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
来源：
FUNCTIONAL MATERIALS LETTERS | 2014年 / 7卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Lithium-ion battery; Li-rich; cathode; graphene; ELECTRODES; MN; NI; CO;
D O I：
10.1142/S179360471440013X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lithium and Mn rich solid solution materials Li[Li0. 26Ni0: 07Co0: 07Mn0: 56] O-2 were synthesized by a carbonate co-precipitation method and modified with a layer of graphene. The graphene-modified cathodes exhibit improved rate capability and cycling performance as compared to the bare cathodes. Electrochemical impedance spectroscopy (EIS) analyses reveal that the improved electrochemical performances are due to acceleration kinetics of lithium-ion diffusion and the charge transfer reaction of the graphene-modified cathodes.
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页数：4
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