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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 4    August 2003

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Preparation and electrochemical properties of nanosized tin dioxide electrode
material by sol-gel process
HE Ze-qiang(何则强)1, LI Xin-hai(李新海)1, WU Xian-ming(吴显明)2, HOU Zhao-hui(侯朝辉)1,LIU En-hui(刘恩辉)1, DENG Ling-feng(邓凌峰)1,<

1. School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China;
2. College of Chermistry and Chemical Engineering,
Jishou University, Jishou 416000, China

Abstract:Nanosized SnO2 powders were prepared by sol-gel process using inorganic salt as a precursor. The tin oxide powders obtained at different calcinating temperatures (300-700℃) were investigated by means of X-ray diffraction(XRD), infrared spectrum (IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA) and transmission electron microscopy (TEM) as well. The results indicate that well-crystallized nanosized SnO2 powders with a structure of rutile and uniform size about 10nm can be obtained when the calcinating is carried out at 550℃ for 3h using the method. The electrochemical properties of nanosized SnO2 powders as anode material for lithium ion batteries were also studied in detail. The results show that nanosized SnO2 is a candidate of anode material for lithium ion batteries with reversible capacity more than 372mA·h/g after ten cycles and low voltage for Li+ intercalation and de-intercalation.

 

Key words:  tin dioxide; nanosized materials; sol-gel method; lithium ion batteries; anode;electrochemical properties

ISSN 1672-7029
CN 43-1423/U

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