摘要
以LiAc.2H2O、V2O5、NH4H2PO4、蔗糖和乙二醇为原料,采用液相多元醇法合成了锂离子电池正极材料Li3V2(PO4)3,研究了烧结温度对产物电化学性能的影响。XRD、SEM和充放电测试表明:在800℃下烧结10 h合成的样品为单斜晶系;在0.1C、3.0～4.3 V下充放电的首次放电比容量为126 mAh.g-1,第20次循环的比容量为120 mAh.g-1。
Li-ion battery cathode material Li3V2（PO4）3 was synthesized by liquid phase polyol method using LiAc·2H2O,V2O5,NH4H2PO4,sucrose and ethylene glycol as raw material.The effects of sintering temperature on the electro-chemical properties of the sample were studied.The XRD,SEM and charge-discharge tests show that the sample sintered at 800 ℃ for 10 h has a single monoclinic structure,when charge-discharge at 0.1C and the voltage of 3.0～4.3V,its initial specific discharge capacity is 126 mAh·g-1,the specific capacity at the 20 th cycle is 120 mAh·g-1.
出处
《热加工工艺》
CSCD
北大核心
2011年第10期113-115,共3页
Hot Working Technology
关键词
磷酸钒锂
正极材料
电化学性能
lithium vanadium phosphate [Li3V2（PO4）3]
cathode material
electro-chemical properties
