溶液燃烧合成法制备钒酸锂及其电化学性能  

Preparation of lithium vanadate by solution combustion synthesis and its electrochemical properties

作　　者：陈宗岭 曹知勤 何逵 张雪峰 Chen Zongling;Cao Zhiqin;He Kui;Zhang Xuefeng(College of Vanadiun and Titanium,Panzhihua University,Panzhihua 617000,Sichuan,China;Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua 617000,Sichuan,China;Sichuan Vanadiun&Titanium Industrial Technology Institute,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]钒钛资源综合利用四川省重点实验室,四川攀枝花617000 [3]四川省钒钛产业技术研究院,四川攀枝花617000

出　　处：《钢铁钒钛》2022年第3期20-25,共6页Iron Steel Vanadium Titanium

基　　金：四川省科技厅应用基础研究项目(2019YJ0688);攀枝花市科技计划项目(2020CY-G-5);钒钛资源综合利用四川省重点实验室项目(2019FTSZ10);国家级大学生创新创业训练计划项目(202111360004)。

摘　　要：以硝酸铵、偏钒酸铵、硝酸锂、葡萄糖、柠檬酸、甘氨酸为原料,采用溶液燃烧合成法成功制备了锂离子电池正极材料LiVO_(3)粉末,探究了煅烧温度和煅烧时间对LiVO_(3)制备的影响,并将制备得到的LiVO_(3)粉末作为活性物质进行电池组装,进一步探究了其作为锂离子电池正极材料时的电化学性能。结果表明:400℃煅烧1 h时制备的LiVO_(3)粉末具有最佳的电化学性能,0.1 A/g的充放电速率下,电池首次放电比容量为244.3 mAh/g,经过50次循环后放电比容量为193.6 mAh/g。Using ammonium nitrate, ammonium metavanadate, lithium nitrate, glucose, citric acid and glycine as raw materials, LiVO_(3)powder as cathode material for lithium-ion battery was successfully prepared by solution combustion synthesis. The effects of calcination temperature and calcination time on the preparation of LiVO_(3) were investigated. The as-prepared LiVO_(3)powder was used as active material for battery assembly, and its electrochemical performance as cathode material for lithium-ion battery was further explored. The results show that the LiVO_(3)powder prepared at 400 ℃ for 1 h has the best electrochemical performance. At the charge discharge rate of 0.1 A/g, the first discharge specific capacity of the battery is 244.3 mAh/g, and after 50 cycles, the discharge specific capacity retains 193.6mAh/g.

关 键 词：钒酸锂 锂离子电池 正极材料 溶液燃烧合成 电化学性能 

分 类 号：TF841.3[冶金工程—有色金属冶金] TM911[电气工程—电力电子与电力传动]