Porous Graphene-Based Electrodes for Fiber-Shaped Supercapacitors with Good Electrical Conductivity  

作　　者：向睿芳 陈馨逸 刘岩 张坤 陆春红 XIANG Ruifang;CHEN Xinyi;LIU Yan;ZHANG Kun;LU Chunhong(Shanghai Frontiers Science Center of Advanced Textiles,Donghua University,Shanghai 201620,China;College of Textiles,Donghua University,Shanghai 201620,China)

机构地区：[1]Shanghai Frontiers Science Center of Advanced Textiles,Donghua University,Shanghai 201620,China [2]College of Textiles,Donghua University,Shanghai 201620,China

出　　处：《Journal of Donghua University(English Edition)》2023年第2期134-141,共8页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.51903033);Shanghai Sailing Program,China(No.19YF1400800)。

摘　　要：Graphene fibers(GFs)are ideal electrodes for f ibrous supercapacitors because of their excellent mechanical and electrical properties.However,the actual specific s urface area(SSA)of GFs is low due to the restacking of g raphene sheets,which limits the capacitance enhancement o f GFs.One of the effective ways to increase the SSA of GFs is to construct a porous fiber structure,but it disrupts t he conductive pathway and adversely affects the electrochemical(EC)performance of GFs.Therefore,a wet-spun porous GF electrode coated with polypyrrole(PPy)was reported in this paper.The resulting electrode exhibits an areal specific capacitance of 31.25 mF·cm^(-2)and a good c ycling stability with a capacitance retention rate of 95%after 5000 charge/discharge cycles.These indicate that porous structures and PPy coating can synergistically improve the EC performance of GFs.

关 键 词：graphene fiber(GF) WET-SPINNING polypyrrole(PPy) capacitance supercapacitor 

分 类 号：TS151[轻工技术与工程—纺织材料与纺织品设计]