直立碳纳米管超级电容器的研究  

A Study on Supercapacitor Based on Aligned Carbon Nanotubes

作　　者：叶晓燕[1] 王艳芝[1] 宋海燕[1] 孙卓[2] 何品刚[1] 方禹之[1] 

机构地区：[1]华东师范大学化学系 [2]华东师范大学纳光电集成与先进装备教育部工程研究中心,上海200062

出　　处：《电化学》2008年第1期24-29,共6页Journal of Electrochemistry

基　　金：国家自然科学基金(20675031);上海市科技委员会(0552nm042);上海市浦江人才计划(06PJ14032)资助

摘　　要：在石英玻璃基底上，以酞菁裂解法低压气相沉积制备大面积管径均匀、长度一致的直立碳纳米管．分别应用电解质溶液浸润、酸处理和循环伏安扫描等3种不同方法纯化活化该直立碳纳米管，并以活化后的碳纳米管作为原型超级电容器的电极．循环伏安扫描和交流阻抗测试表明，CV曲线呈近似矩形，交流阻抗最大相位角超过80°，该直立碳纳米管的比电容为16～32F／g，乃超级电容器理想的电极材料．Large scale vertically aligned carbon nanotubes （ACNTs） with uniform length and diameter were prepared by the pyrolysis of iron（ Ⅱ ） phthalocyanine at low pressure. The ACNTs were activated by electrolyteactivation, acid-activation or electrochemical activation. The performance of the capacitor based on activated AC- NTs was characterized by cyclic voltammograms which was of rectangular shape, impedence spectroscopy in which the phase is above 80° and the result specific capacitance was 16 - 32 F/g, which suggest that the ACNTs are the promising material for the supercapacitor.

关 键 词：直立碳纳米管 超级电容器 循环伏安 交流阻抗 

分 类 号：TM53[电气工程—电器]