Utilization of biomass-derived activated carbon from Miscanthus for dual energy storage: Enhanced performance in phase change material and supercapacitor applications

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dc.contributor.authorAlptekin, Fikret Muge
dc.contributor.authorSiyahjani-Gultekin, Sirin
dc.contributor.authorSahin, Damla
dc.contributor.authorGultekin, Burak
dc.contributor.authorCeliktas, Melih Soner
dc.date.accessioned2026-02-03T12:02:23Z
dc.date.available2026-02-03T12:02:23Z
dc.date.issued2026
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, bio-derived activated carbons (ACs) obtained from Miscanthus under two distinct synthesis conditions denoted as optimum condition 1 (OC1) and optimum condition 2 (OC2) were systematically investigated for their applicability in dual-mode energy storage. Their performance was assessed in two roles: as supporting materials to enhance the thermal properties of phase change materials, and as electrode materials for electrochemical energy storage systems, such as supercapacitors. This dual evaluation aims to demonstrate the versatility and multifunctionality of Miscanthus-based ACs in both thermal and electrochemical storage platforms. For thermal energy storage, an eutectic blend of stearic acid and palmitic acid (SP) was utilized as the phase change material (PCM), and activated carbon was employed to create shape-stabilized PCM via vacuum impregnation methods, resulting in composite PCMs named SP-OC1 and SP-OC2. SP-OC2 demonstrated a significantly higher encapsulation ratio of 88.95% and an enhanced thermal conductivity of 0.597 Wm-1K-1. It melted at 54.79 degrees C and solidified at 51.89 degrees C, with latent heat values of 133.26 Jg-1 and 135.84 Jg-1, respectively, exhibiting a significant enhancement in thermal conductivity, increasing by up to 117% compared to the eutectic SP. In supercapacitor applications, OC1 cell exhibited superior performance with a capacitance of 131 Fg-1, a power density of 488 Wkg-1, and an energy density of 35.30 Whkg-1, whereas OC2 cell showed a capacitance of 67 Fg-1, a power density of 480 Wkg-1, and an energy density of 15.25 Whkg-1. This difference is ascribed to the matching of ionic liquid ion diameters with the pore sizes of OC1. These results highlight the viability of Miscanthus-derived activated carbons as a cost-effective and sustainable precursor for developing high-performance electrode materials in energy storage systems.
dc.description.sponsorshipTUBITAK
dc.description.sponsorshipEge University Scientific Research Projects Coordination Unit [FDK-2020-22276]
dc.description.sponsorshipTUBITAK-BIDEB 2218 Program [118C565]
dc.description.sponsorshipFikret Muge ALPTEKIN was received a scholarship from TUBITAK with a scholarship under 2211-C National PhD Scholarship Program in the Priority Fields in Science and Technology and 2214-A International Doctoral Research Fellowship Programme. This work also funded by Ege University Scientific Research Projects Coordination Unit. Project Number: [FDK-2020-22276]. Authors also thanks to TUBITAK-BIDEB 2218 Program for their financial assistance of Sirin Siyahjani GULTEKIN with Grant Nr.: [118C565]. Damla SAHIN was awarded by TUBITAK with a scholarship under 2211-C National PhD Scholarship Program in the Priority Fields in Science and Technology.
dc.identifier.doi10.1080/15435075.2025.2545505
dc.identifier.endpage173
dc.identifier.issn1543-5075
dc.identifier.issn1543-5083
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105013215499
dc.identifier.scopusqualityQ2
dc.identifier.startpage157
dc.identifier.urihttps://doi.org/10.1080/15435075.2025.2545505
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34733
dc.identifier.volume23
dc.identifier.wosWOS:001549275000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofInternational Journal of Green Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectMiscanthus
dc.subjectactivated carbon
dc.subjectenergy storage systems
dc.subjectshape stabilized-PCM
dc.subjectsupercapacitor
dc.titleUtilization of biomass-derived activated carbon from Miscanthus for dual energy storage: Enhanced performance in phase change material and supercapacitor applications
dc.typeArticle

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