合成条件对锂离子电池正极材料V_6O_(13)物相和结构的影响  

Effects of Synthesis Technology on Phase and Structure of V_6O_(13) Cathode Material for Lithium Ion Batteries

作　　者：田成邦[1] 邹正光[1] 吴一[1] 

机构地区：[1]桂林工学院有色金属材料及其加工新技术教育部重点实验室,广西桂林541004

出　　处：《桂林工学院学报》2008年第4期531-534,共4页Journal of Guilin University of Technology

基　　金：广西自然科学基金资助项目(桂科基0639060)

摘　　要：采用NH4VO3为原料,在Ar气氛保护条件下,以固相热解的方法制备了锂离子电池正极材料V6O13,研究了不同Ar气流量、温度制度等工艺因素对V6O13的物相结构、微观形貌等影响。结果表明,随着Ar气流量的增加,钒氧化物中钒的价态逐渐升高;随着温度的升高,V6O13颗粒逐渐长大,并在(002)和(003)晶面出现了择优生长。在Ar气流量为85 mL/min、升温速率5℃/min、180℃保温1 h、300℃保温1 h、450℃保温30 min的条件下,随炉冷却得到的V6O13物相单一、颗粒均匀,是一种有实用价值的正极材料。V6O13cathode materials for lithium ion batteries are prepared using NH4VO3 as raw material by solid phase method in argon atmosphere. The effects of argon flow rate and temperature scheme on phase and morphlogy of V6O13 are studied. The results show that the Valence state of vanadium increases the argon flow rate. With the increase of the temperature, the grain size of the product becomes larger and makes preferential growth of （002） and （003） crystal face of V6O13. The pure and uniform V6O13 powders can be obtained under the optimum conditions as following： the argon flow rate is 85 mL/min, the heating rate is 5 ℃min, the holding time is 1 h at 180 ℃, lh at 300 ℃and 30 min at 450 % sequentially. V6O13 is a practical and promising cathode material.

关 键 词：V6O13 NH4VO3 正极材料 固相法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]