文献类型：期刊文献

中文题名：超级电容器用新型微晶炭的结构及其电容性能

英文题名：Structures and Capacitance Characteristics of the Novel Crystallite Carbon for Supercapacitor

作者：成果[1];谢应波[1];龙东辉[1];张睿[1];凌立成[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2009

卷号：35

期号：6

起止页码：803

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重点项目(50730003;50672025)

语种：中文

中文关键词：微晶炭;类石墨微晶;电活化;插层

外文关键词：crystallite carbon graphite-like crystallite electrical activation intercalation

摘要：以热处理后的煤沥青焦为原料,采用KOH活化法制备了具有较小比表面积（〈200m2/g）的系列微晶炭。采用N2吸附、X射线衍射（XRD）和X射线光电子能谱（XPS）等手段表征了微晶炭的孔结构、微晶结构以及表面化学性质,研究了微晶炭作为超级电容器电极材料在1 mol/L的四乙基四氟化硼酸铵盐/碳酸丙烯酯电解液体系中的电容性能。结果表明：制得的微晶炭具有大量类石墨微晶和较高的石墨化度,d002（晶面层间距）为0.356-0.666 nm,表面含碳量大于95% 活化6 h后,在4.0 V下微晶炭的质量比电容高达139 F/g。微晶炭的储电行为包括插层电容和双电层电容两部分,其中电活化所造成的插层电容是决定微晶炭最终比电容的主要因素,插层电容主要由电极材料的石墨化度决定。
Crystallite carbons（CCs） with low BET specific surface area（200 m-2/g） have been prepared by KOH activation from pre-heated coal pitch based cokes.The pore structure,crystallite structure and surface chemistry of CCs were investigated by N_2 adsorption,X-ray diffraction（XRD） and X-ray photoelectron spectroscopy（XPS）,respectively.The capacitance performance of CCs as electrode materials for supercapacitors in 1 mol/L tetraethylammonium tetra-fluoroborate/propylene carbonate（Et_4NBF_4/PC） electrolyte was evaluated.Results reveal that CCs have a large amount of graphite-like crystallites and high graphitization degree.The value of d_（002） is in the range of 0.356 to 0.666 nm and the surface carbon contents are above 95%.When activating time is 6 h,the obtained CCs shows maximum mass capacitance of 139 F/g charging at 4.0 V.The energy storage behaviors are mainly composed of intercalation capacitance and electrochemical double-layer capacitance.The intercalation capacitance initiated by ＂electrical activation＂ is the main part of the whole capacitance and the value is determined by graphitization degree of the electrode material.