水热法制备Ni(OH)_2及其超级电容性能  

Preparation and supercapacitor properties of Ni(OH)_2 by hydrothermal method

作　　者：舒畅[1] 陈野[1] 张春霞[1] 葛鑫[1] 张密林[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《电源技术》2007年第7期534-537,共4页Chinese Journal of Power Sources

基　　金：教育部博士点基金资助项目(20050217019)

摘　　要：采用水热法制备了Ni(OH)2,X射线衍射光谱(XRD)测试表明样品为β-Ni(OH)2。通过循环伏安、恒流充放电和交流阻抗对其超级电容性能进行了研究。结果表明:β-Ni(OH)2具有典型的法拉第准电容特性,当pH=12,水热反应温度为180℃时,Ni(OH)2具有最大比容量303.7F·g-1,其电极电阻(RE)为0.1W,且经多次循环后表现出良好的循环稳定性能。Ni （OH）2 was prepared by hydrothermal method, the results of XRD on structure indicate that the sample is β-Ni （OH）2. And supercapacitor properties were studied by cyclic voltammetry（CV）,constant-current charge-discharge and electrochemical impedance spectrum （EIS）. The experimental results show that Ni（OH）2 exhibits typical Faraday capacitor characteristics. When pH is 12 and hydrothermal reaction temperature is 180 ℃, the maximum specific capacitance is 303.7 F·g^-1.The reaction resistance （RE） is 0.1Ω and it has good steady cycling performance.

关 键 词：超级电容器 水热法 氢氧化镍 

分 类 号：TM53[电气工程—电器]