溶胶-凝胶法制备球形负极材料Li_4Ti_5O_(12)  

Synthesis of sphere anode material Li_4Ti_5O_(12) by sol-gel method

作　　者：邵丹[1] 梁文耀[1] 卢子华[1] 禹筱元[1] 

机构地区：[1]华南农业大学理学院,广东广州510642

出　　处：《电池》2012年第1期15-17,共3页Battery Bimonthly

基　　金：广东省自然科学基金(9151064201000039);广东省科技计划项目(2009B010900025);华南农业大学"211工程"三期重点建设项目(2009B010100001);华南农业大学新学科扶持基金(K09140);中国科学院可再生能源与天然气水合物重点实验室开放基金(Y007K2)

摘　　要：以二乙醇胺为抑制剂、Ti(OC4H9)4和CH3COOLi为原料,用溶胶-凝胶法制备球形负极材料钛酸锂(Li4Ti5O12)。用TG、XRD、SEM和电化学性能测试,研究了煅烧温度和时间的影响。最佳条件为:在750℃下煅烧12 h。在此条件下合成的样品具有典型的尖晶石结构和球形形貌,在0.5～3.0 V以0.1C循环,首次放电比容量为167.1 mAh/g,循环性能良好。Sphere anode material lithium titanate（Li4Ti5O12） was synthesized by sol-gel method with Ti（OC4H9）4 and CH3COOLi as raw materials and diethanolamine as inhibitor.Effects of calcining temperature and time were studied by TG,XRD,SEM and electrochemical performance tests.The optimum condition was calcined at 750 ℃ for 12 h.The sample synthesized under such condition had a typical spinel structure and spherical morphology.The initial specific discharge capacity of the sample was 167.1 mAh/g when cycled at 0.1 C and in 0.5～3.0 V,the cycle performance was fine.

关 键 词：锂离子电池 负极材料 溶胶-凝胶法 钛酸锂(Li4Ti5O12) 球形 

分 类 号：TM912.9[电气工程—电力电子与电力传动]