Self-Activated SiO2/C Nanocomposite from Silica-Rich Marine Mucilage for Supercapacitor Applications

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dc.authorid0000-0001-5807-633X
dc.authorid0000-0002-0982-727X
dc.authorid0000-0002-6340-3064
dc.contributor.authorTatli, Neriman Sinan
dc.contributor.authorYilmaz, Mete
dc.contributor.authorYilmaz, Ece Unur
dc.date.accessioned2026-02-12T21:05:33Z
dc.date.available2026-02-12T21:05:33Z
dc.date.issued2023
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractBioresources are continually being explored as potential precursors for sustainable supercapacitor electrode materials. In this work, diatom-rich marine mucilage (MM) collected from the Marmara Sea, Turkey was used as a biomass source and converted to SiO2/Carbon nanocomposite (SiO 2 /C) through pyrolysis and acid etching. Diatom frustules acted as a highly porous silica source while algal organic matter delivered the carbonaceous part of the composite. The natural salts found in marine mucilage served as a self-activating agent and avoided the use of corrosive chemicals for the development of pores. The SiO 2 /C exhibited a competitive capacitance of 210 F g-1 at a current rate of 0.5 A g-1 in 1 M sodium sulfate (Na2SO4) aqueous electrolyte solution. The porous and durable silica skeleton improved capacitance by expanding the electrode/electrolyte interface, and the interconnected hierarchical pores ensured high electrochemical stability during long-term cycling. The mucilage-derived nanocomposite retained 80% and 70% of its capacitance after 4000 and 10,000 charge-discharge cycles, respectively. This work presents a potential solution for the management of marine mucilage by converting it into a high-value electrode material.
dc.identifier.doi10.1149/2754-2734/acd405
dc.identifier.issn2754-2734
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85187680345
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1149/2754-2734/acd405
dc.identifier.urihttps://hdl.handle.net/20.500.12885/7028
dc.identifier.volume2
dc.identifier.wosWOS:001456261000001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofEcs Advances
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260212
dc.subjectbiomass
dc.subjectmarine mucilage
dc.subjectself-activation
dc.subjectnanocomposite
dc.subjectsupercapacitor
dc.titleSelf-Activated SiO2/C Nanocomposite from Silica-Rich Marine Mucilage for Supercapacitor Applications
dc.typeArticle

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