碳气凝胶的电学性能和嵌锂机理研究  

Electrical Property and Li Intercalation of Carbon Aerogeis

作　　者：解德滨[1] 沈军[1] 秦仁喜[1] 徐超[1] 吴广明[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《材料导报》2005年第F05期271-273,共3页Materials Reports

基　　金：上海市自然科学基金项目（02ZE14101）;上海市纳米科技与产业发展促进中心项目（0352nm022,0352nm043）

摘　　要：以间苯二酚和甲醛为前驱体，通过溶胶-凝胶法，经1050℃高温碳化制备碳气凝胶材料。用XRD、SEM对材料的微观结构进行分析表征，通过恒流充放电，循环伏安法对材料的电学性能进行研究。联系材料的微观结构和电学性能，对锂离子在碳气凝胶中的镶嵌过程和机理进行分析，发现微孔和高电位充放电平台有很大关系。Carbon aerogels are prepared by pyrolysis of the RF aerogels derived from resorcinol and formaldehyde through sol-gel process. The structure and electrical properties are investigated by SEM, XRD, constant current charge-discharge and cyclic vohammetry. By comparing the structure and electrical properties of different samples, the electrical properties and Li intercalation of the carbon aerogels are studied. The study indicates that the nano-porcs of carbon aerogels have close relationship with the high voltage platform,

关 键 词：碳气凝胶 锂离子电池 负极材料 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ427.26[化学工程]