期刊
CARBON
卷 95, 期 -, 页码 20-27出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2015.08.003
关键词
-
资金
- National Natural Science Foundation of China [21103108, 21173148]
- materials characterization from Instrumental Analysis Center of Shanghai Jiao Tong University
Rapid capacity fading is one of the major obstacles that seriously impede the applications of tin dioxide (SnO2)-based electrodes. Compositing SnO2 with carbon to form SnO2/carbon composites with rational nanostructures has been proven to be an effective strategy to overcome the problem of rapid capacity fading to a certain extent. Herein, an interestingly interconnected quasi-ball-in-ball nanostructure SnO2/carbon composite, denoted as Cs@void@SnO2@C, has been successfully fabricated by a simple and novel strategy. When used as anode materials for lithium-ion batteries, the Cs@void@SnO2@C exhibits high lithium storage and long cycling performance, delivering a reversible capacity of 793.7 mAh g(-1) after 450 cycles at 200 mA g(-1), and a reversible capacity of 486.3 mAh g(-1) after 1000 cycles even at 1000 mA g(-1). The uniquely interconnected quasi-ball-in-ball structure should be responsible for the good electrochemical performance, which is further confirmed by comparing with two control samples of Cs@SnO2@C and Cs@SnO2. (C) 2015 Elsevier Ltd. All rights reserved.
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