中热固相法制备掺杂钛的钒酸锂正极材料  

Synthesis of Ti-doped lithium vanadium oxides cathode material by a solid-state reaction at middle temperature

作　　者：秦红莲[1] 唐致远[1] 马莉 

机构地区：[1]天津大学化工学院应用化学系,天津300072 [2]东莞市迈科科技有限公司,广东东莞523800

出　　处：《电源技术》2010年第11期1121-1123,共3页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(20973124);教育部博士点基金资助项目(20070056138)

摘　　要：以Li2CO3和V2O5为原料,用中热固相法制备了掺杂Ti4+的锂离子电池正极材料Li1.1V3―yTiyO8(y=0.05、0.1、0.2),并对其电化学性能进行了研究。研究表明,掺杂Ti能够很好地改善中热固相法产品的电化学性能,且当y=0.1时,Li1.1V3―yTiyO8循环性能最好,首次放电比容量高达250.9 mAh/g。Ti-doped lithium vanadium oxides Li1.1V3-yTiyO8（y=0.05、0.1、0.2）were synthesized by a solid state reaction at middle temperature with Li2CO3 and V2O5 as raw materials and its electrochemical property was studied.The results indicate that doping Ti can improve the electrochemical property of the lithium vanadium oxides,Li1.1V3-yTiyO8 has the best electrochemical property when y=0.1,and its first discharge specific capacity can reach 250.9 mAh/g

关 键 词：锂离子电池 正极材料 LI1+XV3O8 中热固相法 掺杂 

分 类 号：TM912.9[电气工程—电力电子与电力传动]