Enhanced Electrochemical Performance of Li[Li0.2Ni0.2Mn0.6]O2 Modified by Manganese Oxide Coating for Lithium-Ion Batteries

被引：69

作者：

Zhao, Yujuan ^{[1
]}

Zhao, Chunsong ^{[1
]}

Feng, Hailan ^{[1
]}

Sun, Zhaoqin ^{[1
]}

Xia, Dingguo ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

[2] Peking Univ, Coll Engn, Beijing 100871, Peoples R China

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2011年 / 14卷 / 01期

基金：

北京市自然科学基金;

关键词：

CATHODE MATERIAL; LINI0.8CO0.2O2; NANOWIRES;

D O I：

10.1149/1.3496402

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li-rich layered cathode material Li[Li0.2Ni0.2Mn0.6]O-2 was modified by manganese oxide coating via a simple deposition and heat-treatment process. The HRTEM images and the XPS analysis demonstrated that the surface of Li[Li0.2Ni0.2Mn0.6]O-2 was covered by continuous manganese oxide layer, with about 10 nm thickness. The electrochemical performance is improved greatly, especially the rate capability. The composite coated with 4 wt % manganese oxide showed high reversible capacity of 210 mAh g(-1) after 50 cycles at 2 C (400 mA g(-1)), compared with 77 mAh g(-1) of the pristine. It is believed that surface modification of Li[Li0.2Ni0.2Mn0.6]O-2 with manganese oxide coating exhibits a convenient approach for a large-scale production. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3496402] All rights reserved.

引用

页码：A1 / A5

页数：5

共 15 条

[1] Demonstrating oxygen loss and associated structural reorganization in the lithium battery cathode Li[Ni0.2Li0.2Mn0.6]O2 [J].

Armstrong, A. Robert ;

Holzapfel, Michael ;

Novak, Petr ;

Johnson, Christopher S. ;

Kang, Sun-Ho ;

Thackeray, Michael M. ;

Bruce, Peter G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (26) :8694-8698

[2]

Dzhurinskii B.F., 1975, RUSS J INORG CHEM+, V20, P2307

[3] Synthesis and electrochemical properties of nanocrystalline Li[NixLi(1-2x)/3Mn(2-x)/3]O2 prepared by a simple combustion method [J].

Hong, YS ;

Park, YJ ;

Ryu, KS ;

Chang, SH ;

Kim, MG .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (09) :1424-1429

[4] Enhancing the rate capability of high capacity xLi2MnO3 • (1-x)LiMO2 (M = Mn, Ni, Co) electrodes by Li-Ni-PO4 treatment [J].

Kang, Sun-Ho ;

Thackeray, Michael M. .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (04) :748-751

[5] Template-free synthesis of Li[Ni0.25Li0.15Mn0.6]O2 nanowires for high performance lithium battery cathode [J].

Kim, Min Gyu ;

Jo, Minki ;

Hong, Young-Sik ;

Cho, Jaephil .

CHEMICAL COMMUNICATIONS, 2009, (02) :218-220

[6] Li0.93[Li0.21Co0.28Mn0.51]O2 nanoparticles for lithium battery cathode material made by cationic exchange from K-birnessite [J].

Kim, Yoojin ;

Hong, Youngsik ;

Kim, Min Gyu ;

Cho, Jaephil .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (05) :1041-1046

[7] Layered Li0.88[Li0.18Co0.33Mn0.49]O2 nanowires for fast and high capacity Li-ion storage material [J].

Lee, Yoojung ;

Kim, Min Gyu ;

Cho, Jaephil .

NANO LETTERS, 2008, 8 (03) :957-961

[8] Investigation and improvement on the storage property of LiNi0.8Co0.2O2 as a cathode material for lithium-ion batteries [J].

Liu, Hansan ;

Yang, Yong ;

Zhang, Jiujun .

JOURNAL OF POWER SOURCES, 2006, 162 (01) :644-650

[9] Synthesis, structure, and electrochemical behavior of Li[NixLi1/3-2x/3Mn2/3-x/3]O2 [J].

Lu, ZH ;

Beaulieu, LY ;

Donaberger, RA ;

Thomas, CL ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) :A778-A791

[10] Understanding the crystal structure of layered LiNi0.5Mn0.5O2 by electron diffraction and powder diffraction simulation [J].

Meng, YS ;

Ceder, G ;

Grey, CP ;

Yoon, WS ;

Shao-Horn, Y .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (06) :A155-A158

← 1 2 →