锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的制备与表征  

Preparation and characterization of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 cathode materials for Li-ion batteries

作　　者：熊利芝[1,2] 胡清华[1,3] 梁凯[1] 何则强[1,2] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000 [2]中南大学化学化工学院,湖南长沙410083 [3]贵州大学理学院化学系,贵州贵阳550025

出　　处：《功能材料》2010年第4期610-612,615,共4页Journal of Functional Materials

基　　金：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);湖南省自然科学基金资助项目(07JJ3014);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)

摘　　要：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。The layered LiNi1/3Co1/3Mn1/3O2 cathode material for Li-ion batteries was synthesized by high-temperature solid-state method.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction （XRD） and scanning electron microscope （SEM）.Results show that LiNi1/3Co1/3Mn1/3O2 with good crystallization can be obtained by high-temperature solid-state method.However,two-step sintering helps to increase the value of I（003）/I（104） and decrease the value of lattice parameters c/a,resulting in perfect layer structure and good electrochemical performances of LiNi1/3Co1/3Mn1/3O2.

关 键 词：锂离子电池 正极材料 LINI1/3CO1/3MN1/3O2 固相法 二次烧结 

分 类 号：TM912[电气工程—电力电子与电力传动]