二氧化锡/碳气凝胶的制备与电化学性能研究  

Electrochemical Performance of Tin Dioxide/Carbon Xerogel Composites as Anode Materials for Lithium-Ion Batteries

作　　者：刘晓静[1] 秦琳琳[1] 施一宁[1] 郑明森[1] 董全峰[1] 

机构地区：[1]厦门大学固体表面物理化学国家重点实验室,化学化工学院化学系,福建厦门361005

出　　处：《电化学》2011年第3期237-240,共4页Journal of Electrochemistry

基　　金：国家自然科学基金项目(200933005,20903077);973项目(2009CB220102)资助

摘　　要：应用真空浸渍法制备二氧化锡/碳气凝胶的复合材料.XRD、BET、SEM及TEM等测试结果显示,二氧化锡纳米颗粒(5～10 nm)均匀地填充在碳气凝胶的孔道内部.在100 mA/g的电流密度下,经过100周次充放电测试,该材料的容量保持率为首次循环的61.9%.The tin dioxide/carbon xerogel composites were synthesized by using vacuum infiltration method.Structural characterization and morphology of the composites were investigated by using XRD,TEM and SEM techniques.BET test was performed to determine the poresize distributions of carbon xerogels and the composites.The results showed that the nano-sized SnO2 particles（5~10 nm） were encapsulated in the pores of carbon xerogels.During the electrochemical tests the SnO2 in the composites exhibited capacity retention of 61.9% after 100 cycles of charge-discharge tests at 100 mA/g.

关 键 词：锂离子电池 负极材料 二氧化锡 碳气凝胶 

分 类 号：O648[理学—物理化学]