Synthesis of TiO2(B)/SnO2 composite materials as an anode for lithium-ion batteries |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan, ROC;2. Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan, Taiwan, ROC;3. Technical Department, ThinTech Materials Technology Co., Ltd., Kaohsiung, Taiwan, ROC;4. Department of Materials Science, National University of Tainan, Tainan, Taiwan, ROC;1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;2. School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore;1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China;2. Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China;1. School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, China;2. Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;1. Department of Chemistry, Georgia Southern University, 250 Forest Drive, Statesboro, GA, 30460, USA;2. Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;3. Chemical Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
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| Abstract: | A TiO2(B) nanosheets/SnO2 nanoparticles composite was prepared by the hydrothermal and chemical bath deposition (CBD) methods, and its electrochemical properties were investigated for use as the anode material of a lithium-ion battery. The as-prepared composites consisted of monoclinic-phase TiO2(B) nanosheets and cassiterite structure SnO2 nanoparticles, in which SnO2 nanoparticles were uniformly decorated on the TiO2(B) nanosheets. The TiO2(B)/SnO2 composites showed a higher reversible capacity and better durability than that of the pure TiO2(B) for use as a battery anode. The composite electrodes exhibiting a high initial discharge capacity of 2239.1 mAh g?1 and a discharge capacity of more than 868.7 mAh g?1 could be maintained after 50 cycles at 0.1 C in a voltage range of 1.0–3.0 V at room temperature. The results suggest that TiO2(B) nanosheets coated with SnO2 could be suitable for use as a stable anode material for lithium-ion batteries. In addition, the coulombic efficiency of the nanosheets remains at an average of 93.1% for the 3rd–50th cycles. |
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| Keywords: | Hydrothermal synthesis Lithium-ion battery |
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