锂离子电池正极材料LiNi0.4Co0.2Mn0.4O2的合成及其电化学性能

材料导报, 2013, 27(14): 42-44.

锂离子电池正极材料LiNi0.4Co0.2Mn0.4O2的合成及其电化学性能

汤宏伟 ^1, , 赵晓阳 ^2, , 司艳丽 ^3, , 李苞 ^4, , 常照荣 ^5,

1.河南师范大学化学化工学院,新乡453007

2.河南师范大学化学化工学院,新乡453007

3.河南师范大学化学化工学院,新乡453007

4.河南师范大学化学化工学院,新乡453007

5.河南师范大学化学化工学院,新乡453007

基金项目: 国家自然科学基金(21071046) 河南省基础与前沿项目(1123004103250) 河南省高校青年骨干教师资助计划(2009GGJS-046)

关键词：正极材料 , LiNi0.4 Co0.2Mn0.4O2 , 电化学性能

Synthesis and Electrochemical Performance of LiNi0.4Co0.2Mn0.4O2 Cathode Material for Lithium Ion Battery

TANG Hongwei ^1, , ZHAO Xiaoyang ^2, , SI Yanli ^3, , LI Bao ^4, , CHANG Zhaorong ^5,

1.河南师范大学化学化工学院,新乡453007

2.河南师范大学化学化工学院,新乡453007

3.河南师范大学化学化工学院,新乡453007

4.河南师范大学化学化工学院,新乡453007

5.河南师范大学化学化工学院,新乡453007

Keywords： cathode materials , LiNi0.4Co0.2Mn0.4O2 , electrochemical performance

以自制(Ni0.4Co0.2 Mn0.4)(OH)2为前驱体,采用高温固相法合成了锂离子电池正极材料LiNi0.4Co0.2Mn0.4O2,采用粉末X射线衍射(XRD)、扫描电镜(SEM)对材料结构和形貌进行了表征,表明所得材料外观为球形,具有典型的α-NaFeO2层状结构,循环伏安、恒电流充放电测试表明,800℃下合成的材料具有最优的电化学性能,首次放电比容量达161.8 mAh/g.

参考文献

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