铝箔刻蚀与导电剂对双电层电容器性能的影响  

Effect of aluminum foil etching and conductive agent on performance of electric double layer capacitor

作　　者：洪东升[1] 周海生[1] 何捍卫[1] 解东梅[1] 杨良[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083

出　　处：《粉末冶金材料科学与工程》2012年第6期729-734,共6页Materials Science and Engineering of Powder Metallurgy

基　　金：粉末冶金国家重点实验室自主课题(20110930Z)

摘　　要：以浓度为1 mol/L的Et4NBF4/AN作电解液,研究铝箔刻蚀时间与2种导电剂(石墨、导电炭黑)对双电层电容器等效串联电阻与电容性能的影响。结果表明,以石墨为导电剂,随刻蚀时间的增加,活性材料与铝箔的接触电阻减小,可使双层电容器的等效串联电阻减小,电极比电容增大。采用刻蚀80 s的铝箔为集流体,导电炭黑为导电剂可获得较小的等效串联电阻与较大的电极比电容,以此优化组合制得的双电层电容器的等效串联电阻为1.4Ω、比电容达到168.3 F/g。Et4NBFa/AN with concentration of 1 mol·L^-1 was used as electrolyte to study the effects of aluminum foil etching and two conductive agents （graphite and conductive carbon black） on effective series resistance （ESR） and specific capacitance of supercapacitor. The results show that, the contact resistance of activated material and aluminum foil decreases with increasing etching time and using graphite as conductive agent, which contributes to obtain smaller ERS and larger electrode specific capacitance; 80 s etching aluminum foil and conductive carbon black are also useful to get smaller ESR and larger electrode specific capacitance. The effective internal resistance of double electric layer capacitor （EDLC） be made up of aluminum foil of 80 s etching as current collector and the conductive carbon black as conductive agent is 1.4Ω , and its specific capacitance is 168.3 F/g.

关 键 词：双电层电容器 超级电容器 导电剂 活性炭 

分 类 号：TM93[电气工程—电力电子与电力传动] TM911