(中国科学院 金属研究所 金属腐蚀与防护国家重点实验室，
沈阳 110016)
摘 要: 采用一种液相反应的方法合成LiV3O8化合物，首先由NH3·H2O，LiOH与V2O5反应合成含有Li和V的反应前驱产物，然后在180℃的真空环境中进行干燥处理，最后将此物质在580℃温度下煅烧成最终产物。采用热重分析试验分析了反应的机理。X射线衍射结果显示得到的物质与用传统合成方法得到的LiV3O8化合物的结构相比，在(100)方向上的衍射峰强度降低很多。在室温、恒电流为3A/m2条件下进行充放电试验，在1.8～4.0V范围内，首次放电容量达到230Ah/kg， 15周后仍能 达到210Ah/kg。
关键字: 锂蓄电池；正极材料；钒酸锂化合物
of LiV3O8 as cathodematerial for
rechargeable lithium batteries
（State Key Laboratory for Corrosion and Protection, Institute of
Metal Research, Chinese Academy of Science, Shenyang 110016, China）
Abstract:A liquid synthesis method was employed to prepare LiV3O8 compound. Firstly, the precursor containing V and Li was made through liquid reaction using NH3·H2O, LiOH and V2O5 as starting reactants, and then the precursor was calcined to become the resulting product at 580℃ for 6h. TGA was used to analys is the reaction mechanism and the X-ray diffraction pattern was used to analysis t he structure of the production. Charge-discharge characteristics of this material were also studied. A specific capacity of 230Ah/kg is available in the range of 1.8～4.0V in the first cycle and 210Ah/kg after 15 cycles. The current density is 3A/m2.
Key words: rechargeable lithium batteries; cathode materials; lithium trivanadate
