文献类型：期刊文献

英文题名：Hierarchical Activated Mesoporous Phenolic-Resin-Based Carbons for Supercapacitors

作者：Wang, Zhao[1];Zhou, Min[1];Chen, Hao[1];Jiang, Jingui[1];Guan, Shiyou[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：9

期号：10

起止页码：2789

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20143600011378);WOS:【SCI-EXPANDED(收录号:WOS:000342679400013)】；

基金：The authors are grateful for the financial support from the National Natural Science Foundation of China (No. 21274043).

语种：英文

外文关键词：carbon; electrochemistry; mesoporous materials; activation; supercapacitors

摘要：A series of hierarchical activated mesoporous carbons (AMCs) were prepared by the activation of highly ordered, body-centered cubic mesoporous phenolic-resin-based carbon with KOH. The effect of the KOH/carbon-weight ratio on the textural properties and capacitive performance of the AMCs was investigated in detail. An AMC prepared with a KOH/carbon-weight ratio of 6:1 possessed the largest specific surface area (1118m(2)g(-1)), with retention of the ordered mesoporous structure, and exhibited the highest specific capacitance of 260Fg(-1) at a current density of 0.1Ag(-1) in 1M H2SO4 aqueous electrolyte. This material also showed excellent rate capability (163Fg(-1) retained at 20Ag(-1)) and good long-term electrochemical stability. This superior capacitive performance could be attributed to a large specific surface area and an optimized micro-mesopore structure, which not only increased the effective specific surface area for charge storage but also provided a favorable pathway for efficient ion transport.