水热法合成富锂材料前驱体Ni_(0.33)Mn_(0.67)CO_3的研究  

Study on the Synthesis of Lithium-rich Material Precursor Ni_(0.33)Mn_(0.67)CO_3 via Hydrothermal Method

作　　者：张佐鹏[1] 

机构地区：[1]湖南师范大学附中,湖南长沙410000

出　　处：《广东化工》2015年第16期303-304,共2页Guangdong Chemical Industry

摘　　要：本文通过水热法合成富锂材料前驱体Ni0.33Mn0.67CO3,并通过前驱体合成富锂材料Li1.37Ni0.33Mn0.67Oδ。通过XRD,SEM,ICP和电化学性能测试等多种手段对材料进行表征。研究结果表明脲和金属比值为2.5,反应温度为200℃,反应时间为8 h为Ni0.33Mn0.67CO3的最佳合成条件。合成的富锂材料性能优异,首圈放电容量达到253.3 m Ah/g。Li-rich cathode material precursor Ni0.33Mn0.67CO3 was synthesized via hydrothermal method. Li-rich cathode material Li1.37Ni0.33Mn0.67Oδ was synthesized by sintering the mixture of precursor and Li OH. The prepared material was characterized by means of XRD, SEM, ICP and electrochemical measurements. It is found that the molar ratio of urea to transition metals（2.5）, calcination temperature（200 ℃） and calcination time（8 h） were the optimal synthesis condition for Ni0.33Mn0.67CO3. Li1.37Ni0.33Mn0.67Oδ exhibited excellent electrochemical performance. The synthesized material delivered an initial specific discharge capacity of 253.3 m Ah/g.

关 键 词：水热法 Ni0.33Mn0.67CO3 富锂材料 

分 类 号：TQ164.6[化学工程—高温制品工业]