介孔二氧化钛/石墨烯材料的制备与储锂性能  

Preparation and lithium storage performance of mesoporous TiO_2/rGO anode material for LIBs

作　　者：张文静 张世超[2] 于景华[1] 邢雅兰[2] 

机构地区：[1]北京化工大学理学院,北京100029 [2]北京航空航天大学材料科学与工程学院,北京100191

出　　处：《电源技术》2018年第2期165-168,共4页Chinese Journal of Power Sources

基　　金：国家"973"计划(2013CB934001)

摘　　要：采用溶剂热法制备介孔二氧化钛颗粒,探究了溶剂热反应时间对制备介孔结构的影响;采用APTES对二氧化钛进行表面电荷改性,探究了不同条件对表面电荷改性的影响;采用静电吸附法制备了介孔二氧化钛/石墨烯,并测试电化学性能。结果表明,二氧化钛的介孔结构和包覆石墨烯均有利于提高材料比容量、倍率性能及循环性能。Mesoporous TiO_2 particles were prepared through solvothermal method, and modified by APTES to change the surface charge state. The effect of solvothermal reaction time and modifying conditions on the structure and properties of products was discussed. Mesoporous TiO_2/rGO composites were synthesized by electrostatic adsorption method. The electrochemical tests reveal that the mesopore structure of TiO_2 and composite structure with rGO are favorable to improve the capacity, rate capability and cycle performance during charge/discharge.

关 键 词：介孔 表面电荷改性 静电吸附 二氧化钛 石墨烯 负极材料 

分 类 号：TM912[电气工程—电力电子与电力传动]