Polyacrylonitrile/polyvinyl alcohol-based porous carbon nanofiber electrodes for supercapacitor applications

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dc.authorid0000-0002-8554-3025en_US
dc.authorid0000-0003-2960-5188en_US
dc.authorscopusid55791385000en_US
dc.authorscopusid31168170200en_US
dc.contributor.authorAltın, Yasin
dc.contributor.authorBedeloğlu, Ayşe
dc.date.accessioned2022-04-21T06:44:55Z
dc.date.available2022-04-21T06:44:55Z
dc.date.issued2021en_US
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Polimer Malzeme Mühendisliği Bölümüen_US
dc.description.abstractPorous carbon nanofibers (PCNFs) were produced from polyacrylonitrile (PAN)/polyvinyl alcohol (PVA) hybrid nanofibers with different mixing ratios and used as the free-standing, flexible, high performance electrodes for the supercapacitors. The effect of PAN/PVA ratio, PVA removing and stabilization/carbonization process on the chemical structure, and the morphology of PAN/PVA hybrid nanofibers and PCNF were investigated by Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FE-SEM), and thermogravimetric analyzer (TGA). It was proved by FT-IR and FE-SEM analyses that PAN/PVA hybrid nanofibers are successfully produced and carbonized. In addition, the electrochemical performance of PCNF electrodes was analyzed by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) methods. Results showed that PCNFs exhibit higher specific capacitance and better electrochemical performance than neat carbon nanofibers (N-CNF). The specific capacitance of the EK5 PCNF (67/33 PAN/PVA wt ratio) was 157 F/g at 5 mV/s scan rate in 1 M H2SO4, while the specific capacitance of N-CNF was 96 F/g at the same conditions. Moreover, the PCNF showed excellent cyclic stability without losing performance through 2500 charge/discharge cycles at a current density of 2 A/g. As a result, free-standing, flexible, and high-performance PCNFs are excellent candidates as supercapacitor electrodes for flexible energy-storage devices.en_US
dc.identifier.doi10.1002/er.6896en_US
dc.identifier.endpage16510en_US
dc.identifier.issn0363907X
dc.identifier.issue11en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage16497en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12885/1948
dc.identifier.volume45en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAltın, Yasin
dc.institutionauthorBedeloğlu, Ayşe
dc.language.isoenen_US
dc.publisherJohn Wiley and Sons Ltden_US
dc.relation.ispartofInternational Journal of Energy Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcyclic voltammetryen_US
dc.subjectelectrospinningen_US
dc.subjecthybrid nanofiberen_US
dc.subjectporous carbon nanofiberen_US
dc.subjectsupercapacitoren_US
dc.titlePolyacrylonitrile/polyvinyl alcohol-based porous carbon nanofiber electrodes for supercapacitor applicationsen_US
dc.typeArticleen_US

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