{"title":"Fibrous and flexible supercapacitors with a hierarchical nanostructure comprised of carbon spheres and graphene","authors":"Xiong Zhang, Yaxin Zheng, Ke-Qin Zhang","doi":"10.1109/IMWS-BIO.2013.6756249","DOIUrl":null,"url":null,"abstract":"A simple electrochemical deposition method is introduced for the preparation of a hierarchical nanostructure comprised of graphene and carbon spheres. The carbon spheres are used as nano-spacers to separate graphene nanosheets, improving properties. This method allowed for the one-step preparation of a fibrous, flexible supercapacitor electrode. The fibrous, flexible supercapacitors fabricated based on this hierarchically nanostructured material achieved excellent electrochemical performance. With an areal capacitance of 60.02mF/cm2 (two-electrode system) in aqueous electrolyte, this structure displayed an areal capacitance three times than that of pure-graphene supercapacitors. This method can be employed to fabricate various graphene-based fibrous and flexible composite electrodes for wearable electronics and energy storage applications.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"13 1","pages":"1-4"},"PeriodicalIF":0.0000,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMWS-BIO.2013.6756249","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A simple electrochemical deposition method is introduced for the preparation of a hierarchical nanostructure comprised of graphene and carbon spheres. The carbon spheres are used as nano-spacers to separate graphene nanosheets, improving properties. This method allowed for the one-step preparation of a fibrous, flexible supercapacitor electrode. The fibrous, flexible supercapacitors fabricated based on this hierarchically nanostructured material achieved excellent electrochemical performance. With an areal capacitance of 60.02mF/cm2 (two-electrode system) in aqueous electrolyte, this structure displayed an areal capacitance three times than that of pure-graphene supercapacitors. This method can be employed to fabricate various graphene-based fibrous and flexible composite electrodes for wearable electronics and energy storage applications.