Effect of doping of magnesium on electrochemical property of LiMn2O4

被引：6

作者：

Aikiyo, H ^{[1
]}

Nakane, K ^{[1
]}

Ogata, N ^{[1
]}

Ogihara, T ^{[1
]}

机构：

[1] Univ Fukui, Fac Engn, Dept Mat Sci & Engn, Fukui 9108507, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2001年 / 109卷 / 03期

关键词：

lithium ion battery; lithium manganese oxide; spray pyrolysis; electrochemical property;

D O I：

10.2109/jcersj.109.1267_197

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of partial substitution of magnesium on the electrochemical property of LiMn2O4 has been investigated. As a result of magnesium doping, the specific surface area decreased. In addition the lattice constant decreased along with the polarization at a high discharge rate and an excellent cycle performance was realized in exchange for somewhat of reduction of the capacity. The voltage jump of 4.1 V for the discharge curve of LiMn2O4 became indistinct with the magnesium doping. The reaction of LiMn1.8Mg0.2O4 during lithium insertion and desertion was a homogeneous phase reaction. Electrochemical measurements revealed that LiMn(1-x)MgxO(4) is a cathode active material appropriate for use at high rates. The optimum x value in LiMn1-x MgxO4 was found to be in the range of about 0.1 to 0.2.

引用

页码：197 / 200

页数：4

共 14 条

[1] Synthesis and electrochemical property of LiNi1-xMxO2 (M=Al, V) precursors by ultrasonic spray pyrolysis [J].

Aikiyo, H ;

Nakane, K ;

Ogata, N ;

Ogihara, T .

ELECTROCERAMICS IN JAPAN III, 2000, 181-1 :163-166

[2] A C/LiCryMn2-yO4 lithium ion polymer electrolyte battery [J].

Appetecchi, GB ;

Scrosati, B .

DENKI KAGAKU, 1998, 66 (12) :1299-1303

[3] 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

[4] Cathode of LiMgyMn2-yO4 and LiMgyMn2-yO4-δ spinel phases for lithium secondary batteries [J].

Hayashi, N ;

Ikuta, H ;

Wakihara, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (04) :1351-1354

[5] Relation between property and electrode characteristics of LiMn2-xMgxO4 positive electrode material for the lithium secondary battery [J].

Idemoto, Y ;

Koura, N ;

Udagawa, K .

ELECTROCHEMISTRY, 1999, 67 (03) :235-237

[6]

ISHIZAWA H, 1986, AM CERAM SOC BULL, V65, P1399

[7] THERMODYNAMIC AND KINETIC-STUDIES OF ELECTROCHEMICAL LITHIUM INSERTION INTO QUATERNARY LI-MN-V-O SPINEL AS POSITIVE MATERIALS FOR RECHARGEABLE LITHIUM BATTERIES [J].

KUMAGAI, N ;

FUJIWARA, T ;

TANNO, K ;

HORIBA, T .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (11) :3194-3199

[8]

Li GH, 1996, J ELECTROCHEM SOC, V143, P178, DOI 10.1149/1.1836405

[9] Synthesis of LiNixM1-xO2 (M=Co, Mn) precursor by ultrasonic spray pyrolysis and electrochemical property [J].

Ogihara, T ;

Ogata, N ;

Mizutani, N .

ELECTROCERAMICS IN JAPAN I, 1999, 157-1 :303-308

[10] Synthesis of porous LiNiO2 powders by ultrasonic spray pyrolysis and their cathode property [J].

Ogihara, T ;

Ogata, N ;

Yonezawa, S ;

Takashima, M ;

Mizutani, N .

DENKI KAGAKU, 1998, 66 (12) :1202-1205

← 1 2 →