Preparation and Characterization of Layered LiMn0.5Ni0.5O2 Cathode Materials for Lithium Ion Batteries by Sol-gel Method
Layered LiMn0.5Ni0.5O2 cathode materials were prepared by a sol-gel method using aqueous solutions of corresponding metal acetates and glycolic acid as the chelating agent. The obtained powders have the typical α-NaFeO2 structure, and the particles are between 300～400 nm in sizes. The initial discharge capacity of the LiMn0.5Ni0.5O2 obtained at 900℃ was about 161. 2 mAh g-1 by cycling the cell between 2.5 V and 4.3 V. After 20 cycles, the discharge capacity of the layered compound remained over 88％ of the initial discharge capacity at a current density of 0.1 mA cm-2.
LiMn0.5Ni0.5O2 sol-gel lithium ion batteries layered structure
XIANG Jia-yuan TU Jiang-ping WU Hui-ming
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
国际会议
北京
英文
25-26
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）