氧化钌及其复合电极的制备与性能  

Preparation and Performances of RuO_2 and Its Composite Electrodes

作　　者：蔡婷[1,2] 朱平[1,2] 任重[1,2] 熊继军[1,2] 

机构地区：[1]中北大学电子测试技术重点实验室,太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《微纳电子技术》2014年第8期508-511,共4页Micronanoelectronic Technology

摘　　要：在三氯化钌(RuCl3)水溶液中,采用循环伏安法在铜电极表面电沉积氧化钌(RuO2)作为超级电容器电极材料。为了提高材料的电化学性能,在电沉积液中引入了氧化石墨烯(GO)水溶液,制备出RuO2/GO复合电极。采用扫描电镜(SEM)观察两种电极的表面形貌,发现氧化钌及其复合电极经60℃干燥处理1 h后,颗粒更均匀且存在明显的多孔特征,电极材料具有良好的表面特性。电化学测试结果表明,扫描速度为0.1 V/s、工作电位窗口为1 V时,两种电极比电容分别为636.5和938 F/m2,功率密度分别为31.83和46.9 W/m2。因此,RuO2/GO复合电极具有较好的电容特性,适合用作超级电容器电极材料。In ruthenium trichloride （RuCl3） aqueous solutions, hydrated ruthenium oxide （RuO2） was deposited on the copper electrode surface as the supercapacitor electrode material by the cyclic voltammetry technology. To improve the electrochemical property of the material, the electrodeposition solution was mixed with the graphene oxide （GO） aqueous solution to prepare the RuO2/GO composite electrode. The surface morphologies of two kinds of electrodes were observed by the scanning electron microscopy （SEM）. It is found that after the drying treatment at 60 ℃ for l h, the particles of the RuO2 and its composite film electrodes are more uniform and have the obvious porous feature, and the electrode material has a good surface property. The electrochemical test results show that when the scanning speed is 0.1 V/s and the working poten- tial window is 1 V, the specific capacitances of the two electrodes are 636.5 and 938 F/m2 , and the power density of two electrodes are 31.83 and 46.9 W/m2 , respectively. Therefore, RuO2/ GO composite electrode has good capacitance characteristic and is suitable for the supercapacitor electrode.

关 键 词：电沉积 氧化钌 超级电容器 氧化石墨烯 干燥 

分 类 号：O646[理学—物理化学]