乙炔黑掺杂NiO_x电极及其应用  

Acetylene black doped NiO_x and its application in an asymmetric hybrid capacitor

作　　者：苏岳锋[1] 吴锋[1] 包丽颖[1] 

机构地区：[1]北京理工大学化工与环境学院国家高技术绿色材料发展中心,北京100081

出　　处：《新型炭材料》2004年第3期192-196,共5页New Carbon Materials

基　　金：国家重点基础研究发展计划(2002CB211800);国家基础研究重大项目前期研究专项(2001CCA05000);国家自然科学基金(90206043) ~~

摘　　要：　应用新型乙炔黑对NiOx电极进行固相掺杂,可改变NiOx电极的微结构和组成,增加电极内部离子通道和电子通道数量,提高电极导电性能和活性物质的利用效率,并优化电极的电容特性;在C NiOx非对称电容体系中,经新型乙炔黑掺杂的NiOx电极其高倍率充放电容量可为未掺杂电极的2.5倍;在实际的工作电压区间,C NiOx非对称电容的能量密度可为C C双电层电容的1.5倍。By doping NiOx with acetylene black (AB), the micro-structure of the composite NiOx electrode is changed and the amount of the ion channels and electron channels in the electrode is increased. As a result, the electron conduction of the NiOx is enhanced and the efficiency of the activated material's utilization is improved. Moreover, the capacitance characteristic of the composite NiOx is better. In a C/NiOx asymmetric hybrid capacitor system, the high rate capacitance of the NiOx electrode doped with 10 % AB is 2.5 times as much as that of the undoped electrode. In the working voltage range, the energy density of the C/NiOx asymmetric hybrid capacitor is 1.5 times as much as that of a C/C electric double-layer capacitor.

关 键 词：电极 双电层电容 掺杂 电容量 高倍率 电容特性 充放电 乙炔黑 新型 固相 

分 类 号：TM53[电气工程—电器]