湖南大学学报（自然科学版）2018，Vol.45Issue(6)：78-84,7.DOI:10.16339／j.cnki.hdxbzkb.2018.06.012
氮掺杂多孔碳的制备及其电化学性能研究*
Study on Preparation and Electrochemical Performance of Nitrogen-doped Porous Carbon
摘要
Abstract
Nitrogen-doped porous carbon(NPC)was successfully prepared by solvent evaporation com-bined with high temperature thermal polymerization in the present study.The microstructure and element composition of the samples were characterized by SEM,TEM,Thermogravimetric analyzer(TG),N2 ad-sorption-desorption and X-Ray Photoelectron Spectroscopy(XPS).The results showed that the nitrogen content of the nitrogen-doped porous carbon was 4.2 at％and the specific surface area was as high as 422.0 m2/g higher than that of the nitrogen-free sample(301.1 m2/g),and the specific surface area and pore volume of the samples were obviously increased by nitrogen element doped.Subsequently,the obtained NPC was also characterized with cyclic voltammetry curves,constant current charge discharge curves and AC impedance spectra.The electrochemical results showed that nitrogen doped method could significantly increase the specific capacitance of the sample,reduce the internal resistance of the porous carbon,and greatly improve the electrochemical properties of the carbon material.At the current density of 0.5 A/g,the specific capacitance of N-doped porous carbon was increased from 83.8 F/g to 162.8 F/g,and the in-ternal resistance was reduced from 1.39 Ω to 0.47 Ω.Furthermore,nitrogen-doped porous carbon pos-sessed good rate performance and cyclic stability.关键词
氮掺杂/多孔碳/电化学性能/超级电容器Key words
nitrogen-doped/porous carbon/electrochemical performance/supercapacitors分类
化学化工引用本文复制引用
郭坤琨,陈鹏,李柱..氮掺杂多孔碳的制备及其电化学性能研究*[J].湖南大学学报（自然科学版）,2018,45(6):78-84,7.基金项目
国家自然科学基金资助项目(21274038,21674034),National Natural Science Foundation of China(21274038,21674034) （21274038,21674034）
