期刊
CERAMICS INTERNATIONAL
卷 42, 期 8, 页码 9433-9437出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.02.173
关键词
SnO2 nanoparticles; Microwave hydrothermal method; Lithium ion battery; Anode
资金
- National Natural Science Foundation of China [51541204]
- Scientific Research Project of Shaanxi Provincial Education Department [2015JK1106]
- Scientific Research Project of Xianyang Municipal Science and Technology Bureau [2013JK0942]
- Doctoral Research Fund of Shaanxi University of Science and Technology [BJ12-12]
- Innovation and Entrepreneurship Training Program of College Students [201510708154]
In this paper, the ultrafine tin oxides (SnO2) nanoparticles are fabricated by a facile microwave hydro thermal method with the mean size of only 14 nm. Phase compositions and microstructures of the as prepared nanoparticles have been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that the ultrafine SnO2 nanoparticles are obtained to be the pure rutile-structural phase with the good dispersibility. Galvanostatic cycling and cyclic voltammetry results indicate that the first discharge capacity of the ultrafine SnO2 electrode is 1196.63 mAh g(-1), and the reversible capacity could retain 272.63 mAh g(-1) at 100 mA g(-1) after 50 cycles for lithium ion batteries (LIBs). The excellent electrochemical performance of the SnO2 anode for LIBs is attributed to its ultrafine nanostructure for providing active sites during lithium insertion/extraction processes. Pulverization and agglomeration of the active materials are effectively reduced by the microwave hydrothermal method. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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