Binder-free carbon fiber/TiNb2O7 composite electrode as superior high-rate anode for lithium ions batteries |
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| Authors: | Shenghui Shen Shengjue Deng Yu Zhong Jianbo Wu Xiuli Wang Xinhui Xia Jiangping Tu |
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| Affiliation: | a State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;b Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou 318000, China |
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| Abstract: | 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 threedimensional 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. |
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| Keywords: | Titanium niobium oxide Integrated electrode Anode Lithium ion batteries High power |
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