Abstract
Binder-free combination of graphene nanosheets with oriented TiO2 nanotube arrays was designed and achieved via one-step facile electrodeposition. The structure and morphology of as-prepared composite graphene nanosheets/TiO2 nanotube arrays were studied in terms of SEM, FESEM, EDX, TEM, Raman and FTIR. Furthermore, the corresponding electrochemical performances were evaluated in terms of galvanostatic charge/discharge, cycle stability and AC impedance. As expected, the composite graphene nanosheets/TiO2 nanotube arrays displayed higher discharge capacity, cycle stability and Li+ diffusion coefficient than bare TiO2 nanotube arrays. High Li-storage activity, superior conductivity and large surface area of graphene nanosheets should be responsible for improved electrochemical performances.
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Acknowledgments
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51363011), the 46th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry in China (6488-20130039), the Program of High-level Introduced Talent of Yunnan Province (10978125), Yunnan Project of Training Talent (1418425) and the Project of Key Discipline (14078232 and 14078311).
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Meng, R., Hou, H., Liu, X. et al. Binder-free combination of graphene nanosheets with TiO2 nanotube arrays for lithium ion battery anode. J Porous Mater 23, 569–575 (2016). https://doi.org/10.1007/s10934-015-0111-x
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DOI: https://doi.org/10.1007/s10934-015-0111-x