Spinel-type lithium-manganese oxide cathodes for rechargeable lithium batteries

被引：28

作者：

Nishimura, K ^{[1
]}

Douzono, T ^{[1
]}

Kasai, M ^{[1
]}

Andou, H ^{[1
]}

Muranaka, Y ^{[1
]}

Kozono, Y ^{[1
]}

机构：

[1] Hitachi Ltd, Hitachi Res Lab, Hitachi, Ibaraki 3191292, Japan

来源：

JOURNAL OF POWER SOURCES | 1999年 / 81卷

关键词：

rechargeable lithium battery; lithium-manganese oxide cathode; cathode capacity loss;

D O I：

10.1016/S0378-7753(99)00224-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dissolution of Mn ions and capacity loss of spinel-type Li-Mn oxide cathodes in LiPF6-containing electrolytic solutions at 60 degrees C were investigated. The amounts of dissolved Mn decreased with the increase in the Li/Mn molar ratios in Li-Mn oxides. The dissolution reaction of Mn ions was enhanced on charged cathodes, resulting in a cathode capacity loss and a contraction of the lattice parameter. An increase of the polarization voltage was considered to cause a capacity loss on the charged cathodes during the course of immersion at 60 degrees C, as well as the dissolution of Mn ions. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：420 / 424

页数：5

共 10 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]

BLYR A, 1997, 191 SOC M MONTR, P108

[3] Correlation between the growth of the 3.3 V discharge plateau and capacity fading in Li1+xMn2-xO4 materials [J].

Gao, Y ;

Dahn, JR .

SOLID STATE IONICS, 1996, 84 (1-2) :33-40

[4] IMPROVED CAPACITY RETENTION IN RECHARGEABLE 4V LITHIUM LITHIUM MANGANESE OXIDE (SPINEL) CELLS [J].

GUMMOW, RJ ;

DEKOCK, A ;

THACKERAY, MM .

SOLID STATE IONICS, 1994, 69 (01) :59-67

[5]

Guohua L., 1996, J. Electrochem. Soc, V143, P178

[6] Electrolyte effects on spinel dissolution and cathodic capacity losses in 4 v Li/LixMn2O4 rechargeable cells [J].

Jang, DH ;

Oh, SM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (10) :3342-3348

[7] 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

[8] SYNTHESIS CONDITIONS AND OXYGEN STOICHIOMETRY EFFECTS ON LI INSERTION INTO THE SPINEL LIMN2O4 [J].

TARASCON, JM ;

MCKINNON, WR ;

COOWAR, F ;

BOWMER, TN ;

AMATUCCI, G ;

GUYOMARD, D .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (06) :1421-1431

[9] ELECTROCHEMICAL EXTRACTION OF LITHIUM FROM LIMN2O4 [J].

THACKERAY, MM ;

JOHNSON, PJ ;

DEPICCIOTTO, LA ;

BRUCE, PG ;

GOODENOUGH, JB .

MATERIALS RESEARCH BULLETIN, 1984, 19 (02) :179-187

[10] Studies on Li-Mn-O spinel system (obtained from melt-impregnation method) as a cathode for 4 V lithium batteries .4. High and low temperature performance of LiMn2O4 [J].

Xia, YY ;

Yoshio, M .

JOURNAL OF POWER SOURCES, 1997, 66 (1-2) :129-133

← 1 →