电化学2013，Vol.19Issue(3)：232-236,5.
Al掺杂尖晶石LiMn2O4正极材料的性能
Electrochemical Performance of AI-Doped Spinel LiMn2O4 Cathode Material for Li-Ion Batteries
摘要
Abstract
Spinel LiMn2O4,a cathode material for Li-ion batteries,is featured as good high-rate performance,low cost and environmental friendly.The pristine and Al-doped LiMn2O4 samples were prepared by sol-gel method.The structure and micromorphology of the as-prepared samples were characterized by X-ray diffraction(XRD)and scanning electron microscopy (SEM).The results demonstrated that the as-prepared LiMn2O4 samples had a typical cubic spinel structure and were composed of sphere-like particles with a diameter range of 300 ～ 500 nm.Galvanostatic charge-discharge tests showed that the LiMn2O4 samples doped with Al element exhibited an enhanced cycling performance.Especially,in the case of LiMn2O4 with 5％ Al-doped,the discharge capacity retention was about 98.2％ at the rate of 1C discharge and was 99％ at the rate of 5C discharge,based on the same charge rate of 1C.关键词
锂离子电池/正极/尖晶石结构/Al掺杂/循环性能Key words
Li-ion batteries/cathode/spinel structure/Al-doping/cycling performance分类
化学化工引用本文复制引用
王永龙,王文阁,张倩,王昕,曹建胜,叶世海..Al掺杂尖晶石LiMn2O4正极材料的性能[J].电化学,2013,19(3):232-236,5.基金项目
国家自然科学基金项目(No.21273119)资助 （No.21273119）
