文献类型：期刊文献

中文题名：超级电容器用沥青焦基活性炭的制备及其电化学性能

英文题名：Preparation and electrochemical performance of petroleum coke-based superactivated carbons as electrodes of supercapacitors

作者：刘希邈[1];詹亮[1];滕娜[1];杨登莲[2];曾小春[2];张睿[1];凌立成[1]

机构：[1]化学工程联合国家重点实验室,联合化学反应工程研究所,华东理工大学,上海200237;[2]新疆天富热电股份有限公司,新疆石河子832000

年份：2006

卷号：21

期号：1

起止页码：48

中文期刊名：新型炭材料

外文期刊名：New Carbon Materials

收录：CSTPCD;;EI(收录号：2006219897683);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000236499800010)】；北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：超级电容器;循环伏安;交流阻抗;活性炭

外文关键词：Supercapacitors; Cyclic voltammetry; AC impedance; Activated carbons

摘要：采用沥青焦为原料,制备了系列高比表面积活性炭作为超级电容器电极材料。用直流循环充放电、循环伏安及交流阻抗等表征方法比较了沥青焦基超级活性炭和日本可乐丽公司YP15活性炭的电化学性能。实验结果表明在KOH、H2SO4、(C2H5)4NBF4/碳酸丙烯酯(PropylenecarbonatePC)及(C2H5)4NBF4/乙腈(Acetonitrile)体系中,沥青焦基活性炭的比电容随比表面积增加,其最高值分别为257F/g、228F/g、140F/g、142F/g,均超过了日本活性炭。沥青焦基活性炭电极在KOH体系中的等效串联电阻的体积电阻率与日本炭相差不大;在H2SO4体系中的电阻率均小于日本活性炭;在碳酸丙烯酯体系中的电阻率均大于日本活性炭;在乙腈体系中,活化剂KOH与沥青焦比例为4:1、经800℃活化3h制备的活性炭的电阻率小于日本活性炭。
A series of petroleum coke-based superactivated carbons （SACs） was prepared by KOH activation. Electrochemical performance of the SACs and a porous carbon called YP15 （Kuraray Chemical Co. , Japan） as electrodes of supercapacitors in aqueous and non-aqueous electrolytes were characterized and compared by chronopotentiograms, cyclic voltammetry and AC impedance spectrum analysis. It was found that the specific capacitances of SACs increased with surface area and the highest values in the electrolytes of KOH, H2SO4, （ C2H5 ） 4NBF4/propylene carbonate （ PC ）, and （ C2 H5 ） 4NBF4/acetonitrile, were 257 F/g, 228 F/g, 140 F/g and 142 F/g respectively, all greater than that of YP15. The ESR volume resistivities of the SACs were lower than that of YP15 in 1 mol/L H2SO4, higher than that of YP15 in 1 mol/L （C2Hs）4NBF4/PC, and close to that of YP15 in 3 mol/L KOH. The ESR volume resistivity of the SACs in 1 mol/L （C2Hs）4NBF4/acetonitrile, which was prepared at 800℃ for 3h using a KOH to petroleum coke ratio of 4： 1, was lower than that of YP15.