电源技术2011，Vol.35Issue(9)：1072-1074,3.
LiCoxAl0.05Mn1.95-xO3.95F0.05的合成与电化学性能研究
Synthesis and electrochemical performance of LiCoxAl0.05Mn1.95-xO3.95F0.05
张景会 1王俊芳 2张海朗2
作者信息
- 1. 河南科技大学化工与制药学院,河南洛阳471003
- 2. 江南大学化学与材料工程学院,江苏无锡214122
- 折叠
摘要
Abstract
The cathode materials of spinel LiMn3O4 and LiCoxAl0.05Mn1.05-xO3.95(x=0,0.01) for lithium ion batteries were synthesized by sol-gel method. The crystalline structure of as-prepared cathode materials was characterized by XRD. The electrochemical performance of the materials was tested by constant-current cyclic testing and cyclic voltammogram. The results show that the materials possesses the pure spinel structure,LiCo0.01AI0.06Mn1.944O3.95F0.05 exhibits the best electrochemical performance with initial specific discharge capacity of 122.9 mAh/g and 120.8 mAh/g respectively in the room temperature (25 ℃) and the high temperature (55 ℃), and the capacity retention is 94.9% and 89.5% after 40 cycles, respectively. It is evident that the multiple doping can improve the stability of spinel structure and cycle performance.关键词
锂离子电池/正极材料/溶胶-凝胶法/复合掺杂Key words
lithium ion battery/ cathode material/ sol-gel method/ multiple doping分类
动力与电气工程引用本文复制引用
张景会,王俊芳,张海朗..LiCoxAl0.05Mn1.95-xO3.95F0.05的合成与电化学性能研究[J].电源技术,2011,35(9):1072-1074,3.
