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
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
收藏
页码:197 / 200
页数:4
相关论文
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