孟令款,于维平

• 1:北京航空航天大学工程训练中心
• 2:北京航空航天大学工程训练中心 北京100083
• 3:北京100083

摘要(Abstract)：

采用电化学共沉积技术在泡沫镍基体上制备了掺杂Co的Ni(OH)2电极,研究了乙醇与水体积比为3∶7,1∶1和7∶3及水溶液情况下,C/Ni(OH)2超级电容器的容量特性。XRD分析表明,所得产物为掺杂Co的-αNi(OH)2;电池测试表明在乙醇与水体积比为1∶1时,能获得最好的电化学充放电特性,在小电流4mA/cm2充放电下,比容量达850F/g;在大电流32mA/cm2充放电下,比容量可达600F/g,其比容量数值随循环次数增加逐渐趋于稳定。扫描电镜观察表明,乙醇与水体积比为1∶1时所得电沉积Ni(OH)2呈细小的蜂窝状三维结构,增大了活性物质与电解液接触的比表面积,使电化学反应更加充分,提高了活性物质的利用率和放电比容量。

关键词(KeyWords)： 超级电容器;Ni(OH)2;电沉积

Abstract:

Keywords:

基金项目(Foundation): 国家“863”项目(2002AA302405);; 北京市自然科学基金(2062014)

作者(Author): 孟令款,于维平

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