Aerosol synthesis of trivalent titanium doped titania/carbon composite microspheres with superior sodium storage performance

作     者：Doudou Guan Qiang Yu Chang Xu Chunjuan Tang Liang Zhou Dongyuan Zhao Liqiang Mai 

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Department of Mathematics and Physics Luoyang Institute of Science and Technology Luoyang 471023 China Department of Chemistry University of California Berkeley California 94720 USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2017年第10卷第12期

页      面：4351-4359页

核心收录：

学科分类：07[理学] 

基　　金：supported by the National Key Research and Development Program of China 国家973计划 国家教育部高等学校学科创新引智计划项目 国家自然科学基金 the National Natural Science Fund for Distinguished Young Scholars 中国博士后科学基金 the Fundamental Research Funds for the Central Universities support from China Scholarship Council 

主　　题：titania aerosol synthesis doping sodium storage nanocomposite 

摘      要：Trivalent titanium doped titania/carbon （TiO2-x/C） composite microspheres have been prepared by a facile aerosol method （ultrasonic spray pyrolysis） using titanium （W） bis（ammonium lactato）dihydroxide （TiBALDH） as the sole precursor. The obtained TiO2-x/C microspheres have particle sizes in the range of 400-1,000 nm. When evaluated as anode material for sodium-ion batteries （SIBs）, they provide a high reversible capadty of 286 mA-h.g-1 with good cycling performance. A capacity of 249 mA-h-g-1 can be achieved after 180 cycles at 50 mA.g-1, which is more than three times higher than that of white TiO2 microspheres （77 mA.h.g-1）. The superior sodium storage performance of these TiO2-x/C composite microspheres can be attributed to the simultaneous introduction of Ti3＋ and oxygen vacancies, ultrafine grain size, as well as the conductive carbon matrix. This study provides a facile and effective approach for the production of TiO2-x/C nanocomposites with superior sodium storage performance.