期刊
MATERIALS RESEARCH BULLETIN
卷 48, 期 4, 页码 1518-1522出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.12.056
关键词
Nanostructures; Sol-gel chemistry; Electron microscopy; Energy storage
资金
- Department Science Foundation of China [210204]
- Social Development Plan of Yunnan Province China [2008cd148]
- National Natural Science Foundation of China [U0937601]
- 863 Program of National High Technology Research Development Project of China [2011AA03A405]
SnO2 nanorods with 2D network structure prepared via an effective method of using the skins of garlic bulbs as templates are examined as anode materials for Li-ion battery. The samples are composed of SnO2 nanorods with length of ca. 80 nm and possess high BET surface area of 163.25 m(2) g(-1). The synthesized SnO2 electrode shows a high specific capacity (ca. 620 mAh g(-1)), an excellent cycling stability and a good rate capability but low initial coulombic efficiency. The nanorods characteristics of SnO2 ensure the fast Li-ion diffusion in the electrode. The loose network structure provides the electrode with a sufficient void space, which sufficiently alleviates the mechanical stress caused by volume change, and thus avoids the electrode to pulverize in the charge-discharge process. Therefore, the obtained SnO2 electrode shows a good cyclic stability and a high rate performance. (C) 2012 Elsevier Ltd. All rights reserved.
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