LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的低热固相合成与性能  

Low-Heat Solid-State Synthesis and Properties of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2

作　　者：刘祥哲[1] 冯季军[1,2] 刘晓贞[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022 [2]山东大学化学与化工学院,山东济南250100

出　　处：《济南大学学报（自然科学版）》2010年第4期364-367,共4页Journal of University of Jinan(Science and Technology)

基　　金：山东省自然科学基金(Y2008B64);山东省优秀中青年科学家科研奖励基金(2006BS09001)

摘　　要：采用低热固相反应法制备锂离子电池层状正极材料LiNi1/3Co1/3Mn1/3O2,考察制坯、回火温度和回火时间对合成产物电化学性能的影响。用X射线衍射分析(XRD)和电化学性能测试,对LiNi1/3Co1/3Mn1/3O2进行分析。结果表明:预烧后需要制坯,最佳回火温度为600℃,最佳回火时间为2 h;最佳工艺条件下制备的样品首次放电比容量为150.3 mAh.g-1,30次循环后仍大于130 mAh.g-1。LiNi1/3Co1/3Mn1/3O2 powders were synthesized by the method of low-heat solid-state reaction.XRD analysis and electrochemical tests were used to investigate the effects of bases,temper temperature and temper time.The results show that the base is needed after preburning and the optimum parameters for temper are 600℃ and 2h;the sample prepared at the optimum conditions has excellent electrochemical properties,with initial discharge capacity of 150.3mAh·g-1,and retains a capacity higher than 130mAh·g-1 even after 30 cycles.

关 键 词：锂离子电池 正极材料 LINI1/3CO1/3MN1/3O2 低热 

分 类 号：TM912.9[电气工程—电力电子与电力传动]