有色金属科学与工程2013，Vol.4Issue(3)：30-33,4.
正极材料LiNi1/3Co1/3Mn1/3O2的Mg掺杂及电化学性能
Mg-doping and electrochemical properties of Li(Ni1/3Co1/3Mn1/3)O2 cathode material
摘要
Abstract
Hydroxide coprecipitation method was used to dope Mg to the precursor to improve the cycle performance of LiNi1/3Co1/3Mn1/3O2 cathode materials. The cathode materials were synthesized by mixing the precursor with lithium salt, ball milling and high temperature calcination. The doped and undoped cathode materials were compared by SEM, XRD and electrochemical Testing respectively. The results showed that both the doped and undoped cathode materials were standard α-NaFeO2 layered structures with no obvious changes in particle sizes. The initial specific discharge capacity were 138.2 and 145.3 mAh/g for the cathode materials doped with 0.03 Mg and the undoped cathode materials. The specific discharge capacities were 131.1 and 119.5mAh/g separately after 50 cycles. The results indicated the cycle performance increased notably after doping Mg though the initial specific discharge capacity decreased slightly.关键词
锂离子电池/正极材料/掺杂Key words
Li-ion battery/cathode material/doping分类
信息技术与安全科学引用本文复制引用
宋晋阳,叶红齐,董虹,周晚珠,杜瑜敏,郝梦秋,覃涛..正极材料LiNi1/3Co1/3Mn1/3O2的Mg掺杂及电化学性能[J].有色金属科学与工程,2013,4(3):30-33,4.基金项目
国家自然科学基金资助项目(21276284) （21276284）
中南大学硕士生学位论文创新资助项目(2011ssxt086) （2011ssxt086）
