【作者】 陈立宝； 贺跃辉； 解晶莹；

【Author】 Chen Libao, He Yuehui, Xie Jingying Energy Science and Technology Laboratory, Shanghai Institute of Microsystem and InformationTechnology, Chinese Academy of Sciences, Shanghai 200050, China The State Key Laboratory for Powder Metallurgy, Changsha, Hunan, 410083, China

【机构】 中科院上海微系统与信息技术研究所； 中南大学粉末冶金国家重点实验室；

【摘要】 采用固相配位化学反应化学法,合成了超细的尖晶石型LiMn2O4正极材料,研究了合成的温度和粉末的形貌、粒度分布、比表面、电化学性能。LiMn2O4的最佳合成温度为500-550℃,550℃下焙烧12小时,合成的粉末的粒度范围为0.08-0.5μm,为超细粉末,其比表面积为10.15 m2/g,首次放电比容量为124.2mAh/g,循环性能稳定。更多还原

【Abstract】 Ultrofine LiMn2O4 cathode was synthesized by solid state coordination method. The calcining temperature of coordination compound precursor and morphology, particle size, specific surface area, electrochemical performance of LiMn2O4 powder were studied. The optimal calcining temperature range of LiMn2O4 cathode is 500-550℃. And the particle size range of LiMn2O4 powder calcined at 550℃ for 12 hours is 0.08-0.5μm. Therefore, the LiMn2O4 is ultrofine powder, which specific surface area is 10.15 m2/g. The first discharge specific capacity is 124.2mAh/g, and the cycling performance is well KEY WORDS Spinel LiMn2O4, Lithium ion battery, solid state coordination method, ultrofind powder更多还原