多层石墨烯用作超级电容器电极导电剂  

Multilayer graphene used as electrode conductive agent of supercapacitor

作　　者：潘登宇[1] 周海生[1] 刘磊[1] 何捍卫[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《电池》2014年第3期135-137,共3页Battery Bimonthly

摘　　要：将多层石墨烯用作超级电容器的导电剂，并与10％炭黑为导电剂的极片进行对比。随着多层石墨烯含量的增加，超级电容器的等效串联电阻减小，但含量超过5％后，减小不明显；电极比电容先增大、后减小，当含量为5％时达到最大。5％多层石墨烯电极与10％炭黑电极相比，倍率特性略差，但可在增加活性材料含量的同时获得较大的比电容（117．4F／g）和较小的等效串联电阻（1．18Ω），以1．2A／g的电流在0—2．7V循环1000次，电容衰减率不超过1．5％。Multilayer graphene was used as electrode conductive agent of supercapacitor, then compared with electrode of 10% content of carbon black as conductive agent. Equivalent series resistance of supercapacitor decreased with the increasing of muhilayer graphene content, but the decreasing was not obvious after the content exceeded 5%. Specific capacitance of electrode first increased then decreased, achieved the maximum when the content was 5%. Compared with electrode of 10% carbon black, the rate capability of electrode of 5 % multilayer graphene was slightly worse;but it could get larger specific capacitance （ 117.4 F/g）and smaller equivalent series resistance（ 1.18 Ω）at the same time of increasing the content of activated material,the capacitance decay rate was all less than 1.5% after 1 000 cycles at the current of 1.2 A/g in 0 ~2. 7 V.

关 键 词：超级电容器 双电层电容器 多层石墨烯 导电剂 

分 类 号：TM53[电气工程—电器]