Surface characteristics and electrochemical properties of activated carbon obtained from different parts of Pinus pinaster

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dc.contributor.authorYumak, Tugrul
dc.date.accessioned2025-03-23T19:41:51Z
dc.date.available2025-03-23T19:41:51Z
dc.date.issued2021
dc.departmentSinop Üniversitesi
dc.description.abstractDifferent parts (needle and cone) of the same biomass (pine, Pinus pinaster) were used as carbon source for activated carbon production. Biomass-derived activated carbons (ACs) were produced by the chemical activation of pyrolytic char. Dependence of the surface characteristics to the biomass type and activation agent were discussed by N2 Physisorption, Raman, and X-ray photoelectron spectroscopy (XPS) techniques. Pine-cone-derived ACs exhibit higher BET surface area and mesopore volume to micropore volume ratio compared to needlederived ACs. Regardless of the biomass type, higher BET surface area and Vmes/Vmic ratio were obtained by KOH activation. XPS results proved that the KOH dominantly reacts with the aliphatic groups while H3PO4 reacts with aromatic groups during the activation. Hence, KOH activation led to the higher relative amounts of surface aromatic groups which will contribute to the total specific capacitance by creating pseudocapacitance. The electrochemical performance of the synthesized ACs was determined in packaged supercapacitors in CR2032 casings. Galvanostatic charge-discharge and self-discharge tests proved that all packaged supercapacitors displayed a repeatable cycle behavior and were highly stable. Cone-derived AC-based supercapacitors displayed higher specific capacitance than those of needle-derived ACs at all current densities (0.25-1 A/g). However, higher ESR values were observed for cone-derived AC based electrodes. The cone-derived AC (by KOH activation) based supercapacitor displayed 99% capacitance retention over 5000 cycles at 500 mA/g current density. It is found that the biomass type primarily affects the surface and electrochemical properties of ACs.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [218M915]
dc.description.sponsorshipTY is grateful to the Scientific and Technological Research Council of Turkey (TUBITAK) for the financial support through the Project Number 218M915.
dc.identifier.doi10.1016/j.colsurfa.2021.126982
dc.identifier.issn0927-7757
dc.identifier.issn1873-4359
dc.identifier.scopus2-s2.0-85110266828
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.colsurfa.2021.126982
dc.identifier.urihttps://hdl.handle.net/11486/6664
dc.identifier.volume625
dc.identifier.wosWOS:000672810400003
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorYumak, Tugrul
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofColloids and Surfaces A-Physicochemical and Engineering Aspects
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectActivated carbon
dc.subjectPackaged supercapacitors
dc.subjectBiomass type
dc.subjectPinus pinaster
dc.titleSurface characteristics and electrochemical properties of activated carbon obtained from different parts of Pinus pinaster
dc.typeArticle

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