纳米SnO_2的制备及电化学性质  

Preparation and Electrochemical Properties of Nano-SnO_2

作　　者：肖卓炳[1] 刘文萍[1] 麻明友[1] 陈上[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000

出　　处：《吉首大学学报（自然科学版）》2006年第3期106-109,共4页Journal of Jishou University(Natural Sciences Edition)

基　　金：湖南省自然科学基金资助项目(0JJY6005);湖南省教育厅科学研究项目(02C308)

摘　　要：以无机盐为前体,采用溶胶-凝胶法制备了纳米SnO2粉体.用TG-DTA,XRD,SEM等对SnO2粉末进行了表征.结果表明,采用该法经500 ℃热处理得到的SnO2超细粉具有良好的四方结构,粒径分布均匀,平均粒径在92 nm左右.将该法制得的SnO2超细粉作为锂离子电池负极材料,可逆容量高达687 mAh·g-1,而且嵌脱锂电压低（0.2～0.5 V）,是一种很有潜力的锂离子电池负极材料.Nano-SnO2 was prepared by using inorganic salt as precursor materials through sol-gel method and characterized by thermogravimetric analysis and differential thermal analysis（TG-DTA）,X-ray diffraction（XRD） and scanning electron microscope（ SEM）. Results indicate that well-crystallized nano-SnO2 about 92 nm can be obtained by annealing at 500℃ for 3 h. The electrochemical properties of nano-SnO2 as anode material for lithium ion batteries were studied. It is shown that nano-SnO2 would be an potential anode material for lithium ion batteries with high reversible capacity （more than 687 mAh-g^-1） and low voltage plateau（0.2 -0.5 V） for Li^＋ intercalation and deintercalation.

关 键 词：SNO2 纳米材料 溶胶-凝胶法 锂离子电池 电化学性质 负极 

分 类 号：O481.4[理学—固体物理] TM912.9[理学—物理]