湖南大学学报（自然科学版）2009，Vol.36Issue(11)：47-52,6.
醇溶剂对炭气凝胶结构和电化学性能的影响
The Influence of Alcoho-solvent on Structure and Electrochemical Performance of Carbon Aerogel
摘要
Abstract
Carbon aerogel was prepared via a sol-gel process from the polycondensation of resorcinol and formaldehyde catalyzed by HMTA in alcohol-solvent, followed by drying at ambient pressure and py-rolysis at 900 ℃ under inert atmosphere and used as electrode materials for aqueous electric double-layer capacitors (EDLCs). The pore structure of carbon aerogel are influenced by the solvent used. A concentra-tive pore size distribution at 20~40 nm is observed in CRFP-E, and a sharp peak in the pore size range from 3 to 4 nm is detected in CRFP-I. The electrochemical behaviors were characterized by means of gal-vanostatic charging/discharging, cycle voltammetry and impedance spectroscopy. The results show that CRFP-E exhibites excellent specific dc capacitance over 180 F/g at 0. 5 A/g and the capacitance maintenance of CRFP-E can achieve 86 % at 5 A/g. The high current charge/discharge performance is improved by a reasonable pore size distribution.关键词
孔结构/炭气凝胶/醇溶剂/电化学性能Key words
pore structure/carbon aerogel/ alcohol-solvent/ electrochemical properties分类
通用工业技术引用本文复制引用
夏笑虹,刘洪波,陈杰,石磊,何月德..醇溶剂对炭气凝胶结构和电化学性能的影响[J].湖南大学学报（自然科学版）,2009,36(11):47-52,6.基金项目
国家自然科学基金资助项目(50872032) （50872032）
