电池2017，Vol.47Issue(3)：152-155,4.DOI:10.19535/j.1001-1579.2017.03.007
Mg掺杂对LiNi0.6Co0.15Mn0.25O2电化学性能的影响
Effect of Mg doping on electrochemical performance of LiNi0.6Co0.15Mn0.25O2
摘要
Abstract
The precursors were synthesized by hydroxide coprecipitation method using sodium hydroxide as precipitating agent and ammonia as complexing agent.Li(Ni0.6 Co0.15 Mn0.25) 1-x MgxO2 (x =0,0.01,0.02,0.03 and 0.04) cathode materials for Li-ion battery were synthesized by a high-temperature solid state method.The influence of Mg2 + doping on the performance of material was studied using XRD,cyclic voltammetry,electrochemical impedance spectra(EIS) and galvanostatic charge-discharge test.The cation mixing degree decreased after Mg doping,the cycle performance and the rate performance of the materials were improved.Li (Ni0.6 Co0.15 Mn0.25) 0.98 Mg0.02 O2 showed better electrochemical performance.It delivered a high initial discharge capacity of 190.9 mAh/g at 0.1 C rate in 2.7-4.3 V and the capacity retention was 90.07％ after 30 cycles at 1.0 C.关键词
高镍材料/Mg掺杂/电化学性能/锂离子电池Key words
rich nickel materials/Mg doping/electrochemical performance/Li-ion battery分类
信息技术与安全科学引用本文复制引用
杜兴姣,韩恩山,朱令之,杨棚竣..Mg掺杂对LiNi0.6Co0.15Mn0.25O2电化学性能的影响[J].电池,2017,47(3):152-155,4.
