溶胶-凝胶法制备高性能锂离子电池正极材料LiNi_(0.5)Mn_(1.5)O_4  

Preparation of LiNi_(0.5)Mn_(1.5)O_4 Cathode for Lithium-Ion Batteries via a Sol-gel Method

作　　者：王利娟[1,2] 唐致远[2] 

机构地区：[1]南阳师范学院化学与制药工程学院,河南南阳473000 [2]天津大学化工学院,天津300072

出　　处：《广东化工》2016年第9期64-66,共3页Guangdong Chemical Industry

基　　金：河南省科技厅重点科技公关项目;编号:152102210337

摘　　要：采用溶胶-凝胶法制备了锂离子电池正极材料LiNi_(0.5)Mn_(1.5)O_5,重点探索了溶液p H对材料物理和电化学性能的影响。其中pH=6.0时制备的材料具有最高的放电比容量、最好的倍率和循环性能。在3 C充放电电流下材料的最高放电比容量为104.2 m Ah·g^(-1),循环200次的放电比容量为95.1 mAh·g^(-1)。LiNi0.5Mn1.5O4 cathode materials for lithium-ion batteries have been synthesized via a sole-gel method. The effects of p H values on the physical and electrochemical performance for LiNi0.5Mn1.5O4 have been researched. The LiNi0.5Mn1.5O4 synthesized at pH=6.0 has the highest discharge specific capacity, the best rate capability and cycling performance. The highest specific capacity of 104.2 m Ah·g-1 is delivered and 95.1 mAh·g-1 is still kept at 3 C for the 200 th cycle.

关 键 词：锂离子电池 镍锰酸锂 溶胶-凝胶法 

分 类 号：TM912.2[电气工程—电力电子与电力传动]