期刊
ELECTROCHIMICA ACTA
卷 54, 期 28, 页码 7519-7524出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.08.006
关键词
SnO2; Carbon coating; Lithium-ion battery; Binder; Nanoparticles
资金
- Australian Research Council (ARC) [CE0561616]
- Australian Research Council [CE0561616] Funding Source: Australian Research Council
Carbon-coated SnO2 nanoparticles were prepared by a novel facile route using commercial SnO2 nanoparticles treated with concentrated sulfuric acid in the presence of sucrose at room temperature and ambient pressure. The key features of this method are the simple procedure, low energy consumption, and inexpensive and non-toxic source materials. As-prepared core/shell nanoparticles were characterized by X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). The electrochemical measurements showed that the carbon-coated SnO2 nanoparticles with 10% carbon and using carboxymethyl cellulose (CMC) as a binder displayed the best electrochemical performance with the highest specific capacity of 502 mAh g(-1) after 50 cycles at a current density of 100 mA g(-1). In addition, owing to the water solvability of CMC, the usage of CIVIC as binder makes the whole electrode fabrication process cheaper and more environmental friendly. (C) 2009 Elsevier Ltd. All rights reserved.
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