文献类型：期刊文献

英文题名：High-Performance Asymmetric Supercapacitor Based on Nanoarchitectured Polyaniline/Graphene/Carbon Nanotube and Activated Graphene Electrodes

作者：Shen, Jiali[1];Yang, Chongyang[1];Li, Xingwei[1];Wang, Gengchao[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2013

卷号：5

期号：17

起止页码：8467

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20133916769529);WOS:【SCI-EXPANDED(收录号:WOS:000330017100031)】；

基金：We greatly appreciate financial support of the National Natural Science Foundation of China (Grant 51173042), Shanghai Municipal Science and Technology Commission (Grant 12nm0504102), Fundamental Research Funds for the Central Universities, and Innovation Program of Shanghai Municipal Education Commission (Grant 11ZZ55).

语种：英文

外文关键词：nanostructured polyaniline; graphene; carbon nanotubes; interfacial polymerization; activation; asymmetric supercapacitor

摘要：Hierarchical sulfonated graphene nanosheet/carboxylated multiwalled carbon nanotube/polyaniline (sGNS/cMWCNT/PANI) nanocomposites were synthesized through an interfacial polymerization method. Activated porous graphene (aGNS) was prepared by combining chemical foaming, thermal reduction, and KOH activation. Furthermore, we have successfully, fabricated an asymmetric supercapacitor (ASC) using sGNS/cMWCNT/PAN1 and aGNS as the positive and negative electrodes, respectively. Because of its unique structure, high capacitive performance, and complementary potential window, the ASC device can be cycled reversibly at a cell voltage of 1.6 V in a 1 M H2SO4 aqueous electrolyte, delivering a high energy density of 20.5 Wh kg(-1) at a power density of 25 kW kg(-1). Moreover, the ASC device also exhibits a superior long cycle life with 91% retention of the initial specific capacitance after 5000 cycles.