电源技术2017，Vol.41Issue(12)：1681-1685,5.
Mg掺杂对LiNi0.56Co0.19Mn0.24Al0.01O2性能的影响
Effect of Mg doping on LiNi0.56Co0.19Mn0.24Al0.01O2 performance
摘要
Abstract
The cathode materials Li[Ni0.56Co0.19Mn0.24](1-X)MgXAl0.01O2 (x=0,0.025,0.05 and 0.075) were prepared by carbonate co-precipitation process followed by the solid state reaction.The effects of Mg2+ addition amount on the crystal structure,morphology and electrochemical performance of the products were studied by X-ray diffraction (XRD),scanning electron microscopy (SEM) and electrochemical performance tests.It's found that the proper amount of Mg2+ doping does not obviously change the structure of LiNi0.56Co0.19Mn0.24Al0.01O2,and the cycle stability can be improved at high rate.LiNi0.546Co0.185Mn0.234Mg0.025Al0.01O2 exhibits the best electrochemical performance.The initial discharge specific capacity is 181.0 mAh/g and the first coulomb efficiency is 83.7％ at 0.1 C.The initial discharge specific capacity is 122.3 mAh/g and the capacity retention is 98.0％ after 30 cycles at 1 C.关键词
锂离子电池/复合正极材料/Mg2+掺杂/电化学性能Key words
lithium ion battery/composite cathode materials/Mg2+ doping/electrochemical performance分类
信息技术与安全科学引用本文复制引用
张广泉,韩恩山,朱令之,芦敏..Mg掺杂对LiNi0.56Co0.19Mn0.24Al0.01O2性能的影响[J].电源技术,2017,41(12):1681-1685,5.
