RuO_x·nH_2O在碳管表面的电沉积及其电容性能研究  

Electrochemical Deposition and Capacitive Properties of Hydrous Ruthenium Oxides on Carbon Nanotubes

作　　者：崔坤在[1] 陈金华[1] 邓国洪[1] 樊桢[1] 孙峰[1] 旷亚非[1] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2007年第5期66-70,共5页Journal of Hunan University:Natural Sciences

基　　金：湖南省自然科学基金资助项目(04JJ1008);高等学校博士学科点专项科研基金资助项目(20040532006)

摘　　要：以石墨底材上直接生长的碳纳米管为基体,采用电化学循环伏安法制备了氧化钌/碳纳米管/石墨电极,通过扫描电子显微镜考察了电极的表面形貌,并在硫酸溶液中研究了其电化学性能.结果表明:氧化钌/碳纳米管/石墨电极具有较好的超电容性能,当RuO2的载量为15.5μg.cm-2时,该复合电极的比电容为215 F.g-1,为相同条件下制备的氧化钌/石墨电极比电容的2.4倍.Hydrous ruthenium oxides （ RuOx·n H2O） were deposited on carbon nanotube electrode by cyclic voltammetry. Carbon nanotubes （CNT） used in this paper were grown directly on graphite substrate. The micrographs of RuOx·nH2O/CNT/graphite electrode were characterized by scanning electron microscopy. The pseudo-capacitive properties of RuOx·nH2O/CNT/graphite electrode were investigated in 0.5 M H2SO4 aqueous solution, and the good pseudo-capacitive properties could be observed. When the loading mass of RuO2（md） was 15.5μg·cm^-2, the specific capacitance based on RuO2 was 215 F·g^-1 for RuOx·nH2O/CNT/graphite electrode and more than 2.4 times higher than that for RuOx·nH2O/graphite electrode with similar amount of RuO2.

关 键 词：超电容 碳纳米管 氧化钌 复合材料 

分 类 号：TM53[电气工程—电器]