文献类型：会议论文

英文题名：Long-life flexible supercapacitors based on nitrogen-doped porous graphene@π-conjugated polymer film electrodes and porous quasi-solid-state polymer electrolyte

作者：Jin, Jie[1];Mu, Hongchun[1];Wang, Wenqiang[1];Li, Xingwei[1];Cheng, Qilin[1];Wang, Gengchao[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

会议论文集：5th International Symposium on Surface Imaging/Spectroscopy at the Solid/Liquid Interface (ISSIS)

会议日期：JUN 06-08, 2018

会议地点：Polish Acad Sci, J Haber Inst Catalysis & Surface Chem, Krakow, POLAND

主办单位：Polish Acad Sci, J Haber Inst Catalysis & Surface Chem

语种：英文

外文关键词：pi-Conjugated polymer; Porous graphene; Quasi-solid-state polymer electrolyte; Flexible supercapacitors

摘要：Polyaniline (PANI) has been regarded as a promising electrode material for energy storage devices. However, unsatisfactory cycling stability seriously restricts its practical application. Herein, the nitrogen-doped porous graphene (NPG) film-supported vertically aligned polyaniline nanocones (NPG@PANI) flexible cathodes were synthesized by electrochemical polymerization. The as-prepared NPG@PANI displays unique porous morphology and strong pi-pi stacking interaction, which facilitates charge transportation and suppresses the dissolution as well as relieves volume changes of PANI during charging-discharging process. Moreover, a novel quasi-solid-state polymer electrolyte (QPE) of porous acrylate rubber/tetraethylammonium tetrafluoroborate-acetonitrile (pACM/Et4NBF4-AN) with enhanced ionic conductivity was prepared to match with pi-conjugated polymer electrodes, which helps to restrain the dissolution and the structure degradation of electrodes. To enhance the energy density, the organic asymmetric flexible supercapacitor (oAFSC) was assembled by NPG@PANI cathode, NPG supported-poly(1,5-diaminoanthraquinone) (NPG@PDAA) anode and pACM/Et4NBF4-AN QPE. The as-assembled oAFSC shows high energy density (6.18 mWh cm(-3)), good rate capability and superior cycling stability (88.7% capacitance retention after 10000 cycles). (C) 2019 Elsevier Ltd. All rights reserved.