新型炭材料2017，Vol.32Issue(2)：123-129,7.
活化方式对有序介孔炭孔结构及电化学性能的影响
The effects of activation method on the pore structure and electrochemical properties of ordered mesoporous carbons used as the electrode materials of supercapacitors
摘要
Abstract
An ordered mesoporous carbon (OMC) synthesized by the soft-template method was activated by (a) CO2 at 900 ℃ for 4 h, (b) H2O at 800 ℃ for 20 min, and (c) H2O at 800 ℃ for 20 min followed by CO2 at 900 ℃ for 4 h to produce three micro-mesoporous carbons, A1, A2 and A3, respectively.Their pore structures were investigated by XRD, TEM, SEM and N2 adsorption.Their electrochemical properties as the electrode materials of supercapacitors were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy.Results indicated that the highly ordered 2D hexagonal original mesostructure of the OMC was well retained after activation.The increasing order of the extent of activation is A1<A2<A3.The specific surface area, pore volume and the specific capacitance of A3 compared to OMC respectively increased significantly from 673 to 2404 m2/g, from 0.98 to 2.24 cm3/g and from 70 to 175 F/g at a current density of 500 mA/g.The increasing order of the capacitance retention ratios of the activated samples at high current densities is A1<A2<A3.关键词
介孔炭/活化方式/孔结构/电化学性能Key words
Mesoporous carbons/Activated methods/Pore structure/Electrochemical properties分类
通用工业技术引用本文复制引用
刘美君,付冬梅,王春雷,米盼盼,王同华..活化方式对有序介孔炭孔结构及电化学性能的影响[J].新型炭材料,2017,32(2):123-129,7.基金项目
国家自然科学基金 (21176036,21276035,21107108,21376037) （21176036,21276035,21107108,21376037）
国家高技术研究发展计划 (863计划,2012AA03A611).National Natural Science Foundation of China (21176036, 21276035, 21107108, 21376037) （863计划,2012AA03A611）
National High Technology Research and Development Program of China (863 Program,2012AA03A611). （863 Program,2012AA03A611）
