LiNi0.8Co0.2O2 cathode materials synthesized by the maleic acid assisted sol-gel method for lithium batteries

被引:58
作者
Fey, GTK [1 ]
Shiu, RF [1 ]
Subramanian, V [1 ]
Chen, JG [1 ]
Chen, CL [1 ]
机构
[1] Natl Cent Univ, Dept Chem Engn, Chungli 32054, Taiwan
关键词
LiNi0.8Co0.2O2; sol-gel; layered; maleic acid; cathode materials; lithium batteries;
D O I
10.1016/S0378-7753(01)00859-X
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
A maleic acid assisted sol-gel method was employed to synthesize LiNi0.8Co0.2O2 cathode materials, which are of interest for potential use in lithium batteries. Various synthesis conditions such as solvent, calcination time, calcination temperature, acid-to-metal ion ratio (R), and lithium stoichiometry were studied to determine the ideal conditions for preparing LiNi0.8Co0.2O2 with the best electrochemical characteristics. The optimal synthesis conditions were found to be an ethanol solvent with a calcination time of 12 h at 800degreesC under flowing oxygen. The first discharge capacity of the material synthesized using the above conditions was 190 mAh/g, and the discharge capacity after 10 cycles was 183 mAh/g, at a 0.1 C rate between 3.0 and 4.2 V. Details of how varying initial synthesis conditions affected capacity and cycling performance of LiNi0.8Co0.2O2 are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:265 / 272
页数:8
相关论文
共 14 条
[1]   Particulate sol-gel synthesis and electrochemical characterization of LiMO2 (M=Ni, Ni0.75Co0.25) powders [J].
Chang, CC ;
Kumta, PN .
JOURNAL OF POWER SOURCES, 1998, 75 (01) :44-55
[2]   LiNi0.74Co0.26-xMgxO2 cathode material for a Li-ion cell [J].
Cho, J .
CHEMISTRY OF MATERIALS, 2000, 12 (10) :3089-3094
[3]   STRUCTURE AND ELECTROCHEMISTRY OF LI1+/-YNIO2 AND A NEW LI2NIO2 PHASE WITH THE NI(OH)2 STRUCTURE [J].
DAHN, JR ;
VONSACKEN, U ;
MICHAL, CA .
SOLID STATE IONICS, 1990, 44 (1-2) :87-97
[4]   THERMAL-STABILITY OF LIXCOO2, LIXNIO2 AND LAMBDA-MNO2 AND CONSEQUENCES FOR THE SAFETY OF LI-ION CELLS [J].
DAHN, JR ;
FULLER, EW ;
OBROVAC, M ;
VONSACKEN, U .
SOLID STATE IONICS, 1994, 69 (3-4) :265-270
[5]   THE CYCLING PROPERTIES OF THE LIXNI1-YCOYO2 ELECTRODE [J].
DELMAS, C ;
SAADOUNE, I ;
ROUGIER, A .
JOURNAL OF POWER SOURCES, 1993, 44 (1-3) :595-602
[6]   The effects of sintering time on the structure and electrochemical properties of Li(Ni0.8Co0.2)O2 [J].
Gover, R ;
Kanno, R ;
Mitchell, B ;
Hirano, A ;
Kawamoto, Y .
JOURNAL OF POWER SOURCES, 2000, 90 (01) :82-88
[7]   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
[8]   Layered LiNi0.5Co0.5O2 cathode materials grown by soft-chemistry via various solution methods [J].
Julien, C ;
Letranchant, C ;
Rangan, S ;
Lemal, M ;
Ziolkiewicz, S ;
Castro-Garcia, S ;
El-Farh, L ;
Benkaddour, M .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2000, 76 (02) :145-155
[9]   Low temperature synthesis of insertion oxides for lithium batteries [J].
Manthiram, A ;
Kim, J .
CHEMISTRY OF MATERIALS, 1998, 10 (10) :2895-2909
[10]  
Nagaura T., 1990, PROG BATTERIES SOLAR, V9, P20