用酚醛树脂为碳源制备碳包覆Li_4Ti_5O_(12)材料  

Preparation of carbon-coated Li_4Ti_5O_(12) composite using phenol-formaldehyde resin as the carbon source

作　　者：吕岩[1] 张浩[1,2] 曹高萍[2] 王碧燕[1] 

机构地区：[1]北京科技大学,北京100191 [2]防化研究院,北京100191

出　　处：《电池工业》2010年第5期296-299,共4页Chinese Battery Industry

摘　　要：碳包覆改性是提高尖晶石型钛酸锂倍率性能比较有效的方法之一。用兼顾水溶性和热固性的酚醛树脂作为碳源,制备出"核-壳"结构的C/Li4Ti5O12复合材料。利用SEM、TEM和电化学表征测试,着重研究了包覆的碳含量对材料电化学性能的影响,最终确定碳包覆量为1%wt时,能最有效地提高Li4Ti5O12的倍率性能。One effective way to achieve high rate characteristics for spinel lithium titanate is to prepare carbon coated Li4Ti5O12.The ＂core-shell＂ structured C/Li4Ti5O12 composite was prepared using phenol-formaldehyde resin as carbon source which was water-soluble.We mainly studied on the influence of contents of coated carbon on the electrochemical characteristics of the material with SEM,TEM and electrochemical tests.The composite with 1%wt carbon could effectively improve the rate capability of Li4Ti5O12.

关 键 词：LI4TI5O12 酚醛树脂 碳包覆 

分 类 号：TM912.9[电气工程—电力电子与电力传动]