Construction of advanced high-rate anodes is critical for the development of high-power lithium ion batteries （LIBs）. In this work, we report a binder-free carbon fiber/CF）]titanium niobium oxide （TiNb2O7 （TNO）...Construction of advanced high-rate anodes is critical for the development of high-power lithium ion batteries （LIBs）. In this work, we report a binder-free carbon fiber/CF）]titanium niobium oxide （TiNb2O7 （TNO）） composite electrode via a simple solvothermal method combined with heat treatment. Continuous TNO film consisting of cross-linked TNO nanoparticles of 30-50 nm is strongly anchored on the carbon fiber forming integrated CF/TNO composite electrode. Owing to the intimate three- dimensional structure, the as-prepared CF]TNO electrode presents exceptional high-rate performance （245 mAh/g at 1 C, and 138 mAh/g at 80 C） and enhanced cyclability with a capacity of 150 mAh]g at the current density of 10 C after 1000 cycles. Our results demonstrate the CF/TNO electrode as efficient anode for application in high-power lithium ion batteries.展开更多
基金supported by National Natural Science Foundation of China(Nos.51502263 and 51772272)Qianjiang Talents Plan D(No.QJD1602029)+2 种基金Startup Foundation for Hundred-Talent Program of Zhejiang Universitysupport by the Program for Innovative Research Team in University of Ministry of Education of China(No.IRT13037)Key Science and Technology Innovation Team of Zhejiang Province(No.2010R50013)
文摘Construction of advanced high-rate anodes is critical for the development of high-power lithium ion batteries （LIBs）. In this work, we report a binder-free carbon fiber/CF）]titanium niobium oxide （TiNb2O7 （TNO）） composite electrode via a simple solvothermal method combined with heat treatment. Continuous TNO film consisting of cross-linked TNO nanoparticles of 30-50 nm is strongly anchored on the carbon fiber forming integrated CF/TNO composite electrode. Owing to the intimate three- dimensional structure, the as-prepared CF]TNO electrode presents exceptional high-rate performance （245 mAh/g at 1 C, and 138 mAh/g at 80 C） and enhanced cyclability with a capacity of 150 mAh]g at the current density of 10 C after 1000 cycles. Our results demonstrate the CF/TNO electrode as efficient anode for application in high-power lithium ion batteries.
