Preparation and electrochemical properties of nanosized tin dioxide electrode material by sol-gel process

来源期刊：中国有色金属学报(英文版)2003年第4期

论文作者：何则强 李新海 吴显明 侯朝辉 刘恩辉 邓凌峰 胡传跃 田慧鹏

文章页码：998 - 1002

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

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.