摘要
以氯化亚锡、草酸和无水乙醇为原料,采用溶胶-凝胶法制备了纳米SnO粉末,并用热重-差热分析、X-射线衍射分析、透射电镜和扫描电镜等多种电化学方法对其进行了表征。结果表明,采用溶胶-凝胶法可以制备出粒度分布较集中,平均粒径在20nm左右的纳米SnO粉末。该纳米SnO的可逆容量达到607mAh·g-1,经80次循环后平均每次循环的容量损失只有0.056%,说明纳米SnO是一种优秀的高容量锂离子电池负极材料。
Nano-SnO powders were prepared by sol-gel technique using tin dichloride, oxalic acid and dehydrated alcohol as raw materials, and characterized by thermogravimertric （TG） analysis and differential thermal analysis （DTA）, X-ray diffraction （XRD）, transmission electron microscope （TEM）, scanning electron microscopy （SEM） in combination with various electrochemical methods. Results show that nano-SnO powders with narrow size distribution around 20 nm could be obtained by calcinating the precursor at 500 ℃ for 6 h. Nano-SnO delivers a re- versible capacity of 607 mAh·g^-1 and the capacity loss per cycle is about 0.056% after being cycled 80 times, which indicates that nano-SnO powders are good anode materials with high capacity for Li ion battery applications.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2006年第2期253-257,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金项目(No.200376086)
湖南省教育厅优秀青年项目(No.04B016)
中国博士后科学基金项目(No.2005037700)
中南大学博士后科学基金项目(No.2004107)资助
作者简介
通讯联系人。E-mail：csuhzq@163．com 何则强．男，31岁，博士．副教授；研究方向：能源材料与催化材料。
