Journal
JOURNAL OF POROUS MATERIALS
Volume 23, Issue 3, Pages 569-575Publisher
SPRINGER
DOI: 10.1007/s10934-015-0111-x
Keywords
Graphene nanosheets; Oriented TiO2 nanotube arrays; One-step electrodeposition; Anode active material; Lithium ion battery
Funding
- National Natural Science Foundation of China [51363011]
- 46th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry in China [648820130039]
- Program of High-level Introduced Talent of Yunnan Province [10978125]
- Yunnan Project of Training Talent [1418425]
- Project of Key Discipline [14078232, 14078311]
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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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