High energy supercapacitors based on functionalized carbon nanotubes: Effect of atomic oxygen doping via various radiation sources

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dc.authoridkorkmaz, satiye/0000-0002-7592-3366
dc.authoridKaraman, Onur/0000-0003-3672-1865
dc.authoridKARAMAN, CEREN/0000-0001-9148-7253
dc.contributor.authorKariper, Ishak Afsin
dc.contributor.authorKorkmaz, Satiye
dc.contributor.authorKaraman, Ceren
dc.contributor.authorKaraman, Onur
dc.date.accessioned2024-09-29T15:57:13Z
dc.date.available2024-09-29T15:57:13Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractHerein, carbon nanotubes (CNTs) were oxygen functionalized by irradiation with diverse radiation sources including Am-241, Sr-90, Co-60, and Na-22 for the first time to be used as the electrode material in a high-energy supercapacitor. The oxygen contents of the irradiated CNTs were fine-tuned via the energy of the radiation source. The physicochemical characterization of as-obtained CNTs was conducted by X-Ray Diffraction (XRD), Raman, and Scanning Electron Microscopy, Energy Dispersive X-Ray (SEM-EDX) analysis whereas cyclic voltammetry and galvanostatic charge-discharge techniques were performed to assess the electrochemical performance of the as-assembled symmetrical supercapacitor cells. The CNT irradiated by Am-241 radiation source offered superior specific capacitance values compared to the other irradiated CNTs thanks to its higher content of oxygen functional groups. The highest specific capacitance for CNT Am-241 sample (with 7.32% oxygen) was calculated to be 489.6 F.g(-1) at a current density of 0.1 A.g(-1), which was almost 2.75 fold that of non-irradiated CNT sample. The capacitance retention of as-synthesized CNT Am-241 was determined as 98.50% for the 5,000th CV cycle. The outstanding energy density of 56.90 W.h.kg(-1) was achieved even at a high power density value of 9992.19 W.kg(-1), comparable to the commercial batteries, will pave the way for facile fabrication of high-energy electrochemical energy storage systems based on functionalized carbon nanotubes.en_US
dc.identifier.doi10.1016/j.fuel.2022.124497
dc.identifier.issn0016-2361
dc.identifier.issn1873-7153
dc.identifier.scopus2-s2.0-85129519662en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.fuel.2022.124497
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4684
dc.identifier.volume324en_US
dc.identifier.wosWOS:000799158900005en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofFuelen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCarbon nanotubesen_US
dc.subjectRadiation sourcesen_US
dc.subjectOxygen functionalizationen_US
dc.subjectHeteroatom dopingen_US
dc.subjectSupercapacitorsen_US
dc.titleHigh energy supercapacitors based on functionalized carbon nanotubes: Effect of atomic oxygen doping via various radiation sourcesen_US
dc.typeArticleen_US

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