The effect of ZnO coating on electrochemical cycling behavior of spinel LiMn2O4 cathode materials at elevated temperature

被引:116
作者
Sun, YK [1 ]
Hong, KJ
Prakash, J
机构
[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea
[2] IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA
关键词
D O I
10.1149/1.1580819
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The structural stability of nanosized ZnO-coated LiMn2O4 was characterized by its cycling behavior at 30 and 55degreesC. The structural degradation and Mn dissolution of the as-prepared and ZnO-coated LiMn2O4 electrodes before and after cycling were studied. The ZnO-coating significantly improved cycling performance at 55degreesC. The reason for the excellent cycling performance of ZnO-coated LiMn2O4 electrode is largely attributed to ZnO's role of HF collection from the electrolyte. (C) 2003 The Electrochemical Society.
引用
收藏
页码:A970 / A972
页数:3
相关论文
共 15 条
[1]   Surface treatments of Li1+xMn2-xO4 spinels for improved elevated temperature performance [J].
Amatucci, GG ;
Blyr, A ;
Sigala, C ;
Alfonse, P ;
Tarascon, JM .
SOLID STATE IONICS, 1997, 104 (1-2) :13-25
[2]  
AMATUCCI GG, 1997, Patent No. 5674645
[3]   Mechanism for limited 55°C storage performance of Li1.05Mn1.95O4 electrodes [J].
Du Pasquier, A ;
Blyr, A ;
Courjal, P ;
Larcher, D ;
Amatucci, G ;
Gérand, B ;
Tarascon, JM .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (02) :428-436
[4]  
Guohua L., 1996, J. Electrochem. Soc, V143, P178
[5]   Dissolution of spinel oxides and capacity losses in 4V Li/LixMn2O4 coils [J].
Jang, DH ;
Shin, YJ ;
Oh, SM .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (07) :2204-2211
[6]   Electrochemical performance of natural graphite by surface modification using aluminum [J].
Kim, SS ;
Kadoma, Y ;
Ikuta, H ;
Uchimoto, Y ;
Wakihara, M .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (08) :A109-A112
[7]  
Kweon HJ, 2000, ELECTROCHEM SOLID ST, V3, P128
[8]   Degradation mechanisms in doped spinels of LiM0.05Mn1.95O4 (M = Li, B, Al, Co, and Ni) for Li secondary batteries [J].
Lee, JH ;
Hong, JK ;
Jang, DH ;
Sun, YK ;
Oh, SM .
JOURNAL OF POWER SOURCES, 2000, 89 (01) :7-14
[9]   Synthesis and electrochemical properties of ZnO-coated LiNi0.5Mn1.5O4 spinel as 5 V cathode material for lithium secondary batteries [J].
Sun, YK ;
Lee, YS ;
Yoshio, M ;
Amine, K .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (05) :A99-A102
[10]   Electrochemical performance of nano-sized ZnO-coated LiNi0.5Mn1.5O4 spinel as 5 V materials at elevated temperatures [J].
Sun, YK ;
Hong, KJ ;
Prakash, J ;
Amine, K .
ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (04) :344-348