锂离子电池正极材料LiNi1/3Co1/3Mn1/3O2的制备与表征

功能材料, 2010, 41(4): 610-615.

锂离子电池正极材料LiNi1/3Co1/3Mn1/3O2的制备与表征

1.吉首大学,化学化工学院,湖南,吉首,416000;中南大学,化学化工学院,湖南,长沙,410083

2.吉首大学,化学化工学院,湖南,吉首,416000;贵州大学,理学院化学系,贵州,贵阳,550025

3.吉首大学,化学化工学院,湖南,吉首,416000

4.吉首大学,化学化工学院,湖南,吉首,416000;中南大学,化学化工学院,湖南,长沙,410083

基金项目: 国家自然科学基金资助项目(20376086) 中国博士后科学基金资助项目(2005037700) 湖南省教育厅科学研究资助项目(07A058) 中南大学博士后科学基金资助项目(2004107) 湖南省自然科学基金资助项目(07JJ3014)

关键词：锂离子电池 , 正极材料 , LiNi1/3Co1/3Mn1/3O2 , 固相法 , 二次烧结

Preparation and characterization of LiNi1/3Co1/3Mn1/3O2 cathode materials for Li-ion batteries

以乙酸锂、硝酸镍、硝酸钴和乙酸锰为原料,通过高温固相法,分别采用一次烧结和二次烧结合成了LiNi1/3Co1/3Mn1/3O2.采用X射线衍射、扫描电镜分析以及电化学测试等手段对LiNi1/3Co1/3Mn1/3O2的微观结构、表面形貌和电化学性能进行了研究.结果表明,高温固相法能得到结晶良好的LiNi1/3Co1/3Mn1/3O2,但二次烧结提高了材料的I(003)/I(104)值,降低了c/a值,得到的LiNi1/3Co1/3Mn1/3O2具有更完善的层状结构和更优良的电化学性能.

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