摘要
以六水合氯化钴(CoCl2.6H2O)和水合三氯化钌(RuCl3.3H2O)为前驱体,采用胶体法制备超级电容器用(RuO2/Co3O4)·nH2O复合薄膜电极材料。用X射线衍射仪以及CHI660C电化学工作站对该复合薄膜的物相结构及电化学性能进行表征。结果表明:当CoCl2·6H2O和RuCl3·3H2O的物质的量比n(Co):n(Ru)为2:1时,于350℃下热处理2.5 h制备的复合薄膜电极具有优良的性能,在浓度为0.5mol/L的H2SO4电解液中其比电容达到512 F/g,500次充放电循环后比电容量保持在充放电循环前的96.1%;充放电电流为0.01A时,内阻为1.2。
Using COC12-6H20 and RuC13·3H2O as raw materials, （RuO2/Co304）.nH20 composite film electrode material for supercapacitor was prepared by colloidal method. The phase transformation and electrochemical properties were studied by XRD and electrochemical system of CHI660C, respectively. The results show that when the molar ratio of COC12.6H20 and RuCla＇3H20 is 2：1, the composite film electrode prepared after heat-tread at 350℃for 2.5 h exhibites an excellent comprehensive property, and its specific capacitance is 512 F/g in 0.5 mol/L H2SO4 electrolyte, which still keeps at 96.1% after 500 charge-discharge cycles. Besides, when charge-discharge current is 0.01A, the internal resistense of （RuO2/Co304）＇nH20 composite film electrode is 1.2 Ω.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2013年第1期107-112,共6页
Materials Science and Engineering of Powder Metallurgy
基金
国家高技术研究发展计划(863计划)资助项目(2007AA03Z240)
米塔尔基金资助项目(07MX18)
关键词
超级电容器
胶体法
薄膜电极
比电容
supercapacitor
colloidal
film electrode
specific capacitance
