Graphene nanoplatelet-coated electrodes with cellulose binders for 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl-based aqueous proselyte

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dc.contributor.authorEken, Taha Yasin
dc.contributor.authorKaykilarli, Cantekin
dc.contributor.authorTuna, Ali
dc.contributor.authorParmak, Ebru Devrim Sam
dc.contributor.authorUzunsoy, Deniz
dc.contributor.authorPeljo, Pekka
dc.date.accessioned2026-02-08T15:15:35Z
dc.date.available2026-02-08T15:15:35Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThis study investigates the development of cellulose-bonded graphene nanoplatelet-coated electrodes for organic flow batteries (OFBs) utilizing 4-Hydroxy-2,2,6,6-Tetramethylpiperidine 1-oxyl (TEMPOL) as the active material. Graphite felt electrodes were coated via an optimized dip-coating process, varying the number of dips (1, 5 and 10). Cyclic voltammetry (CV) showed a 150% increase in oxidation peak current and a 250% increase in reduction peak current for the 10-dipped electrodes compared to pristine ones. Electrochemical impedance spectroscopy (EIS) revealed a 35% reduction in charge transfer resistance (Rp) for the 5-dipped electrodes, indicating enhanced ion transfer efficiency. Surface characterization analyses, including SEM, XRD and Raman spectroscopy, confirmed uniform graphene coatings and structural integrity, while contact angle measurements demonstrated a transition from hydrophobic (157 degrees) to hydrophilic (0 degrees) surfaces, improving wettability and electrolyte interaction. These findings establish cellulose as a sustainable, cost-effective binder, with potential scalability for large-scale energy storage applications.
dc.description.sponsorshipAalto University (Finland) [210D005]; Turkish National Agency and Bursa Technical University Erasmus Office for the Erasmus + funding
dc.description.sponsorshipWe would like to thank to Bursa Technical University (Turkiye), University of Turku (Finland) and Aalto University (Finland) for their unconditional supports. TYE and DU also would like to thank to Bursa Technical University Scientific Research Projects Coordinatorship for the project number 210D005. TYE also would like to thank to Erasmus+, Turkish National Agency and Bursa Technical University Erasmus Office for the Erasmus + funding.
dc.identifier.doi10.1080/1536383X.2025.2458510
dc.identifier.endpage789
dc.identifier.issn1536-383X
dc.identifier.issn1536-4046
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85216735984
dc.identifier.scopusqualityQ2
dc.identifier.startpage778
dc.identifier.urihttps://doi.org/10.1080/1536383X.2025.2458510
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5864
dc.identifier.volume33
dc.identifier.wosWOS:001411799700001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofFullerenes Nanotubes and Carbon Nanostructures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectOrganic flow batteries
dc.subjectGraphene
dc.subjectDip coating
dc.subjectCV
dc.subjectEIS
dc.titleGraphene nanoplatelet-coated electrodes with cellulose binders for 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl-based aqueous proselyte
dc.typeArticle

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