Improved electrochemical performance of the Li1.2Ni0.13Co0.13Mn0.54O2 wired by CNT networks for lithium-ion batteries

被引：30

作者：

Yang, Shunyi ^{[1
,2
]}

Huang, Guo ^{[2
,3
]}

Hu, Shejun ^{[1
]}

Hou, Xianhua ^{[1
]}

Huang, Youyuan ^{[2
]}

Yue, Min ^{[2
]}

Lei, Gangtie ^{[3
]}

机构：

[1] S China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] BTR New Energy Mat INC, Shenzhen 518000, Peoples R China

[3] Xiangtan Univ, Sch Chem, Xiangtan 411105, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 118卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Lithium ion batteries; Cathode material; Li1.2Ni0.13Co0.13Mn0.54O2; Carbon nanotubes; Composite materials; CATHODE MATERIAL; LAYERED COMPOSITE; LI2MNO3-LIMO2; M; MN; NI;

D O I：

10.1016/j.matlet.2013.11.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The layered Li1.2Ni0.13Co0.13Mn0.54O2 cathode material has been synthesized and wired with CNT networks by spray drying technology. Homogeneous CNT networks were wired intimately on the surface of the pristine material. After CNT networks wiring, the electrode discharged superior initial capacity of 250.5 mAh g(-1) at 0.2C between 2.5 and 4.65 V with initial coulombic efficiency improved to 81.7% from 74.3% (the pristine), and moreover, it shows higher rate capability with the capacity of 183.5 mAh g(-1) at 5C. The improved electrochemical performances of the CNT networks-wired sample were mainly attributed to the enhanced electronic conductivity and kinetics of both the lithium-ion diffusion through surface layer and the charge transfer reaction. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：8 / 11

页数：4

共 16 条

[1] High-performance LiFePO4 cathode material from FePO4 microspheres with carbon nanotube networks embedded for lithium ion batteries [J].

Chen, Meng ;

Du, Chunyu ;

Song, Bai ;

Xiong, Kai ;

Yin, Geping ;

Zuo, Pengjian ;

Cheng, Xinqun .

JOURNAL OF POWER SOURCES, 2013, 223 :100-106

[2] Role of surface coating on cathode materials for lithium-ion batteries [J].

Chen, Zonghai ;

Qin, Yan ;

Amine, Khalil ;

Sun, Y. -K .

JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (36) :7606-7612

[3] Direct growth of LiMn2O4 on carbon nanotubes as cathode materials for lithium ion batteries [J].

Ding, Yunhai ;

Li, Jiaxin ;

Zhao, Yi ;

Guan, Lunhui .

MATERIALS LETTERS, 2012, 68 :197-200

[4] A simple method of preparing graphene-coated Li[Li0.2Mn0.13Co0.13]O2 for lithium-ion batteries [J].

He, Zhenjiang ;

Wang, Zhixing ;

Guo, Huajun ;

Li, Xinhai ;

Wu Xianwen ;

Yue, Peng ;

Wang, Jiexi .

MATERIALS LETTERS, 2013, 91 :261-264

[5] High-rate properties of Li1.95FeSiO4/C/CNTs composite as cathode material for lithium-ion batteries [J].

Huang, Xiaobing ;

Chen, Honghui ;

Wang, Haiyan ;

Zhou, Shibiao ;

Chen, Yuandao ;

Liu, Beiping ;

Yang, Jifeng ;

Zhou, Guinan ;

Jiang, Qinglai ;

Qu, Meizhen ;

Pan, Zhonglai ;

Yu, Zuolong .

SOLID STATE IONICS, 2012, 220 :18-22

[6] AlF3-coated Li(Li0.17Ni0.25Mn0.58)O2 as cathode material for Li-ion batteries [J].

Li, G. R. ;

Feng, X. ;

Ding, Y. ;

Ye, S. H. ;

Gao, X. P. .

ELECTROCHIMICA ACTA, 2012, 78 :308-315

[7] Li-rich layered composite Li[Li0.2Ni0.2Mn0.6]O2 synthesized by a novel approach as cathode material for lithium ion battery [J].

Lin, Jing ;

Mu, Daobin ;

Jin, Ying ;

Wu, Borong ;

Ma, Yunfeng ;

Wu, Feng .

JOURNAL OF POWER SOURCES, 2013, 230 :76-80

[8]

Liu YJ, 2013, POWDER TECHNOL

[9]

Song XQ, 2000, J INORG MATER, V15, P33

[10] Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrodes for lithium-ion batteries [J].

Thackeray, Michael M. ;

Kang, Sun-Ho ;

Johnson, Christopher S. ;

Vaughey, John T. ;

Benedek, Roy ;

Hackney, S. A. .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (30) :3112-3125

← 1 2 →