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Title A name given to the resource PEDOT-Doped Mesoporous Nanocarbon Electrodes for High Capacitive Aqueous Symmetric Supercapacitors Subject The topic of the resource carbon matrix; carbon nanoparticles; electrode fabrication; FESEM/ATR-FTIR/XRD/BET/BJH/CV/GCD/EIS; mesopores; nanocomposites; onion peels pyrolysis; poly(3,4-ethylenedioxythiophene); supercapacitors Description An account of the resource Poly(3,4-ethylenedioxythiophene) (PEDOT) and PEDOT-functionalized carbon nanoparticles (f-CNPs) were synthesized by in situ chemical oxidative polymerization and pyrolysis methods. f-CNP-PEDOT nanocomposites were prepared by varying the concentration of PEDOT from 1 to 20% by weight (i.e., 1, 2.5, 5, 10, and 20 wt%). Several characterization techniques, such as field-emission scanning electron microscopy (FESEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), X-ray diffraction (XRD), N2 BrunauerEmmettTeller (BET) and BarrettJoynerHalenda (BJH) analyses, as well as cyclic voltammetry (CV), galvanostatic charge discharge (GCD), and electrochemical impedance spectroscopy (EIS), were applied to investigate the morphology, the crystalline structure, the N2 adsorption/desorption capability, as well as the electrochemical properties of these new synthesized nanocomposite materials. FESEM analysis showed that these nanocomposites have defined porous structures, and BET surface area analysis showed that the standalone f-CNP exhibited the largest surface area of 801.6 m2/g, whereas the f-CNP-PEDOT with 20 wt% exhibited the smallest surface area of 116 m2/g. The BJH method showed that the nanocomposites were predominantly mesoporous. CV, GCD, and EIS measurements showed that f-CNP functionalized with 5 wt% PEDOT had a higher capacitive performance compared to the individual f-CNPs and PEDOT constituents, exhibiting an extraordinary specific capacitance of 258.7 F/g, at a current density of 0.25 A/g, due to the combined advantage of enhanced electrochemical activity induced by PEDOT doping, and highly developed porosity of f-CNPs. Symmetric aqueous supercapacitor devices were fabricated using the optimized f-CNP-PEDOT doped with 5 wt% of PEDOT as active material, exhibiting a high capacitance of 96.7 F/g at 1.4 V, holding practically their full charge, after 10,000 chargedischarge cycles at 2 A/g, thus providing the highest electrical electrodes performance. Hereafter, this work paves the way for the potential use of f-CNP-PEDOT nanocomposites in the development of high-energy-density supercapacitors. 2024 by the authors. Creator An entity primarily responsible for making the resource Taj M.; Bhat V.S.; Sriram G.; Kurkuri M.; Manohara S.R.; Padova P.D.; Hegde G. Source A related resource from which the described resource is derived Nanomaterials, Vol-14, No. 14 Publisher An entity responsible for making the resource available Multidisciplinary Digital Publishing Institute (MDPI) Date A point or period of time associated with an event in the lifecycle of the resource 2024-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.3390/nano14141222" target="_blank" rel="noreferrer noopener">https://doi.org/10.3390/nano14141222</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199858864&amp;doi=10.3390%2Fnano14141222&amp;partnerID=40&amp;md5=10c368529bba53f62c897f960ff4e86b" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199858864&amp;doi=10.3390%2fnano14141222&amp;partnerID=40&amp;md5=10c368529bba53f62c897f960ff4e86b</a> Rights Information about rights held in and over the resource All Open Access; Gold Open Access; Green Open Access Relation A related resource ISSN: 20794991 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Taj M., Nano-Composites and Materials Research Laboratory, Department of Physics, Siddaganga Institute of Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Karnataka, Tumakuru, 572103, India, Department of Physics, HKBK College of Engineering, Karnataka, Bengaluru, 560045, India; Bhat V.S., Department of Materials Science, Mangalore University, Karnataka, Mangalagangotri, 574199, India; Sriram G., School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea; Kurkuri M., Centre for Research in Functional Materials (CRFM), Jain (Deemedtobe University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Manohara S.R., Nano-Composites and Materials Research Laboratory, Department of Physics, Siddaganga Institute of Technology (Affiliated to Visvesvaraya Technological University, Belagavi), Karnataka, Tumakuru, 572103, India; Padova P.D., Consiglio Nazionale delle Ricerche, Istituto di Struttura della Materia (CNRISM), Via Fosso del Cavaliere, 100, Rome, 00133, Italy, Istituto Nazionale di Fisica NucleareLaboratori Nazionali di Frascati (INFNLNF), Via E. Fermi, 54, Frascati, 00040, Italy; Hegde G., Centre for Advanced Research and Development, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India, Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India