2种泡沫碳活化用于超级电容器电极材料的充放电性能研究  

Electrode Performances of Supercapacitors with Two Kinds of Activated Carbon Derived from Foams

作　　者：邴雪飞[1] 吕永根[1] 吴杰[1] 杨常玲[2] 

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海20005J [2]东华大学化学与化工学院,上海200051

出　　处：《材料导报（纳米与新材料专辑）》2009年第1期316-319,共4页

基　　金：国家自然科学基金（50572015）

摘　　要：分别以酚醛树脂和煤沥青泡沫碳为原料，经水蒸气活化、研磨制得比表面积和粒径相近的活性碳粉。采用扫描电镜、BET吸附仪和恒流充放电测试仪对2种活性碳的结构进行了表征并研究了其充放电性能。结果表明，微孔的孔径分布对充放电性能有很大影响，提高比表面积的同时增大微孔的孔径，有利于提高活性碳电极的充放电容量和功率。Two kinds of activated carbon powder are obtained through foaming, carbonization, vapour activation and grinding from phenol resin and coal tar. Their morphology and pore structure are characterized with scanning microscope and BET nitrogen adsorption instrument, while the charge-discharge performances are investigated by constant current battery tester. The results show that the micropores smaller than 2nm play a more important role in the performances. Increasing the specific surface area and the diameter of micropores benefit the charge-discharge behavior at larger current.

关 键 词：超级电容器 活性碳 孔结构 

分 类 号：TQ424.1[化学工程] TM912.2[电气工程—电力电子与电力传动]