{"title":"Donor–Acceptor–Donor-Functionalized Pillared Graphene Oxide for High-Performance Flexible Supercapacitor Device","authors":"Sudhir D. Jagadale, Sidhanath V. Bhosale","doi":"10.1002/ente.202402230","DOIUrl":null,"url":null,"abstract":"<p>In this investigation, donor–acceptor–donor (D-A-D) based small organic molecule 2,5-bis((4-aminophenyl) amino) cyclohexa-2,5-diene-1,4-dione (2NH<sub>2</sub>-Ph-BQ) as the pillar in between graphene oxide (GO) sheets to fabricate the GO-BAPh-BQ-BAPh-GO electrode materials with graphite foil (GF) substrate is utilized. At first, three-electrode supercapacitor (SC), two-electrode symmetric supercapacitor (SSC) device, and flexible symmetric supercapacitor device using GO-BAPh-BQ-BAPh-GO/GF electrode are assembled, which show excellent electrochemical performance with respective specific capacitance (<i>C</i><sub>sp</sub>), energy density (ED), power density (PD), and cycling stability. The three-electrode cell galvanostatic charging–discharging (GCD) exhibits good <i>C</i><sub>sp</sub> of 338.07 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup> current density, and cyclic voltammogram exhibits <i>C</i><sub>sp</sub> of 244.31 F g<sup>−1</sup> at 5 mV s<sup>−1</sup>. The SSC device GCD exhibits good <i>C</i><sub>sp</sub> of 147.67 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup> current density, ED 36.18 Wh kg<sup>−1</sup>, and PD 1259.98 W kg<sup>−1</sup>. Cycling stability shows 99.03% retention after 10 000 GCD cycles and coulombic efficiency 99.21%. The performance of the pillared in SSC suggests the great potential of the electrode material or developing both high energy and power densities in electrical energy storage devices.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy technology","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ente.202402230","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
In this investigation, donor–acceptor–donor (D-A-D) based small organic molecule 2,5-bis((4-aminophenyl) amino) cyclohexa-2,5-diene-1,4-dione (2NH2-Ph-BQ) as the pillar in between graphene oxide (GO) sheets to fabricate the GO-BAPh-BQ-BAPh-GO electrode materials with graphite foil (GF) substrate is utilized. At first, three-electrode supercapacitor (SC), two-electrode symmetric supercapacitor (SSC) device, and flexible symmetric supercapacitor device using GO-BAPh-BQ-BAPh-GO/GF electrode are assembled, which show excellent electrochemical performance with respective specific capacitance (Csp), energy density (ED), power density (PD), and cycling stability. The three-electrode cell galvanostatic charging–discharging (GCD) exhibits good Csp of 338.07 F g−1 at 0.5 A g−1 current density, and cyclic voltammogram exhibits Csp of 244.31 F g−1 at 5 mV s−1. The SSC device GCD exhibits good Csp of 147.67 F g−1 at 0.5 A g−1 current density, ED 36.18 Wh kg−1, and PD 1259.98 W kg−1. Cycling stability shows 99.03% retention after 10 000 GCD cycles and coulombic efficiency 99.21%. The performance of the pillared in SSC suggests the great potential of the electrode material or developing both high energy and power densities in electrical energy storage devices.
在本研究中,利用基于供体-受体-供体(D-A-D)的小有机分子2,5-二((4-氨基苯基)氨基)环己-2,5-二烯-1,4-二酮(2NH2-Ph-BQ)作为支柱,在氧化石墨烯(GO)片之间制备了石墨箔(GF)衬底的GO- baph - bq - baph -GO电极材料。首先组装了三电极超级电容器(SC)、两电极对称超级电容器(SSC)器件和采用GO-BAPh-BQ-BAPh-GO/GF电极的柔性对称超级电容器器件,分别具有比电容(Csp)、能量密度(ED)、功率密度(PD)和循环稳定性等优异的电化学性能。三电极电池恒流充放电(GCD)在0.5 A g−1电流密度下的Csp值为338.07 F g−1,循环伏安图显示在5 mV s−1电流密度下的Csp值为244.31 F g−1。SSC器件GCD在0.5 A g−1电流密度下Csp值为147.67 F g−1,ED值为36.18 Wh kg−1,PD值为1259.98 W kg−1。循环稳定性:GCD循环10000次后的保留率为99.03%,库仑效率为99.21%。SSC中柱状结构的性能表明,该电极材料在开发高能量和功率密度的储能器件方面具有巨大的潜力。
期刊介绍:
Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy.
This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g.,
new concepts of energy generation and conversion;
design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers;
improvement of existing processes;
combination of single components to systems for energy generation;
design of systems for energy storage;
production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels;
concepts and design of devices for energy distribution.