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采用共沉淀法合成Ni0.5Co0.2Mn0.3(OH)2前驱体,将前驱体和LiOH混合均匀后经高温煅烧合成了锂离子电池正极材料LiNi0.5Co0.2Mn0.3O2,并对其进行电化学性能检测。试验表明,制备的电池在电压2.8～4.3V(vs.Li/Li+)区间内,0.1C倍率下的首次库伦效率为88.4%;在1C倍率下循环100次后,放电比容量为157.7mAh/g,容量保持率为96.6%。
Abstract：High-capacity LiNi0.5Co0.2Mn0.3O2 lithium ion battery cathode material precursor was synthesized by sintering technique mixed with LiOH and Ni0.5Co0.2Mn0.3(OH)2 prepared by Co-precipitation Method in a certain proportion.Electrochemical properties of LiNi0.5Co0.2Mn0.3O2 were investigated.The results indicate that the prepared battery has excellent electrochemical performances at 2.8～4.3 V(vs.Li/Li+).The initial coulombic efficiency is 88.4%at 0.1 Crate.The capacity retention after 100 cycles is 96.6%at1 Crate with specific capacity of 157.7 mAh/g.
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基本信息:
中图分类号:TM912
引用信息:
[1]郑江峰,黄亚祥,杨娟,等.容量型锂离子电池正极材料LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2的合成[J].有色金属(冶炼部分),2018(10):64-67.
基金信息:
广东省扬帆计划引进创新创业团队专项资金(粤财教[2017]108号)
2018-10-12
2018-10-12