期刊
MATERIALS LETTERS
卷 63, 期 22, 页码 1946-1948出版社
ELSEVIER
DOI: 10.1016/j.matlet.2009.06.017
关键词
Carbon nanotubes; Nanocomposites; Tin-dioxide; Composite materials; Lithium ion batteries
资金
- Shanghai Leading Academic Discipline Project [B113]
SnO2/multi-walled carbon nanotube (MWCNT) composite was prepared via a diffusion method. Firstly the MWCNT was sonicated in a filtrate which was derived from a tin dichloride solution mixed with AgNO3 solution. Then the SnO2/MWCNT composite was prepared whereby, after calcination in N-2 atmosphere, the salts inside the MWCNT decomposed to SnO2. The resulting composite was characterized by transmission electron microscopy, Raman spectroscopy and X-ray diffraction, which indicated that SnO2 had infiltrated into the MWCNT and filled the interior. The subsequent evaluation of the electrochemical performance in lithium ion batteries showed that the SnO2/MWCNT composite had a reversible discharge capacity of 505.9 mAh(.)g(-1) after 40 cycles, as compared to 126.4 mAh(.)g(-1) for pure nano-SnO2. (C) 2009 Elsevier B.V. All rights reserved.
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