期刊
MATERIALS
卷 5, 期 7, 页码 1275-1284出版社
MDPI
DOI: 10.3390/ma5071275
关键词
bismuth telluride; graphene; Li-ion batteries; sandwich
类别
资金
- National Natural Science Foundation of China [51101139]
- Ph.D. Programs Foundation of Ministry of Education of China [20100101120024]
- Foundation of Education Office of Zhejiang Province [Y201016484]
- Qianjiang Talents Project of Science Technology Department of Zhejiang Province [2011R10021]
- Key Science and Technology Innovation Team of Zhejiang Province [2010R50013]
A sandwich structured Bi2Te3-nanoplates/graphene-nanosheet (Bi2Te3/G) hybrid has been synthesized by a facile in situ solvothermal route and has been investigated as a potential anode material for Li-ion batteries. Bi2Te3 grows during the solvothermal process with the simultaneous reduction of graphite oxide into graphene. The in situ formation process of the hybrid has been investigated by X-ray diffraction and X-ray photoelectron spectra. The Li-storage mechanism and performance of Bi2Te3/G and bare Bi2Te3 have been studied by galvanostatic cycling and cyclic voltammetry. The Bi2Te3/G sandwich exhibits an obviously improved cycling stability compared to bare Bi2Te3. The enhancement in electrochemical performance can be attributed to the combined conducting, confining and dispersing effects of graphene for Bi2Te3 nanoplates and to the self-assembled sandwich structure.
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