电化学2013，Vol.19Issue(3)：204-209,6.
前驱体对三元正极材料LiNi0.5Co0.2Mn0.3O2性能的影响
The Effect of Precursors on Performance of LiNi0.5Co0.2Mn0.3O2 Cathode Material
摘要
Abstract
Commercial LiNi0.5Co0.2Mn0.3O2 material is generally prepared by a combination of co-precipitation and solid state reaction method.The particle size distribution and morphology of Ni0.5Co0.2Mn0.3(OH)2 precursor have a great impact on the electrochemical performance of LiNi0.5Co0.2Mn0.3O2.In this work,the crystal structure and surface morphology of LiNi0.5Co0.2Mn0.3O2 prepared by three different precursors were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).Particle size distribution,tap density and electrochemical performance were investigated.The results show that the particle size distribution of every precursor has most direct impact on properties of the corresponding LiNi0.5Co0.2Mn0.3O2.The precursor with micropores on surface results in the best electrochemical performance.The discharge capacity for full cell test was 156.4 mAh·g-1(0.2C),meanwhile,the cycling performance is excellent.The capacity fading was limited in the first 300 cycles with up to 92％ capacity retention after 500 cycles.关键词
锂离子电池/正极材料/LiNi0.5Co0.2Mn0.3O2/前驱体Key words
lithium ion battery/cathode material/LiNi0.5Co0.2Mn0.3O2/precursor分类
化学化工引用本文复制引用
胡东阁,王张志,刘佳丽,黄桃,余爱水..前驱体对三元正极材料LiNi0.5Co0.2Mn0.3O2性能的影响[J].电化学,2013,19(3):204-209,6.基金项目
上海市分子催化和功能材料重点实验室(No.08DZ2270500)资助 （No.08DZ2270500）
