碳纳米管与活性炭超级离子电容器的频率响应  

Frequency response characteristics of supercapacitors utilizing carbon nanotube and activ ated carbon electrodes

作　　者：梁逵[1,2] 陈艾[1] 叶芝祥[3] 

机构地区：[1]电子科技大学微电子与固体电子学院 [2]四川工业学院材料科学与工程系,成都610039 [3]成都信息工程学院地球环境科学系

出　　处：《功能材料与器件学报》2002年第2期183-186,共4页Journal of Functional Materials and Devices

基　　金：国家自然科学基金资助项目(50082001)

摘　　要：分别采用碳纳米管和活性炭作为超级离子电容器的电极材料,应用交流阻抗频谱法,研究了两类超级离子电容器的频率响应特性。结果表明,用碳纳米管作电极,超级离子电容器在频率250mHz以下出现“电荷饱和”;而用活性炭作电极,超级离子电容器在频率为100mHz时仍未出现“电荷饱和”,说明碳纳米管超级离子电容器的频率响应特性优于活性炭超级离子电容器的频率响应特性。但是上述两类超级离子电容器的频率响应特性均比传统介质电容器的频率响应特性差。Frequency response characteristi cs of supercapacitors utilizing carbon nanotube and activated carbon block electrodes were studie d by AC impedance analysis.Charge sa turation of supercapacitors utilizing carbon nanotube electrod es occurs at about 250mHz,but that of activated carbon is not observed in the frequency range of 100mHz -100kHz.Frequency response ch aracteristics of superca -pacitors utilizing both carbon nanotube and activated carbon electrodes were worse than that of dielectric capacitors.

关 键 词：频率响应特性 碳纳米管 活性炭 超级离子电容器 介质电容器 

分 类 号：TM53[电气工程—电器]