Nanoporous Carbon Electrodes Derived from Coffee Side Streams for Supercapacitors in Aqueous Electrolytes

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorSelinger, Julianen_US
dc.contributor.authorStock, Sebastianen_US
dc.contributor.authorSchlemmer, Werneren_US
dc.contributor.authorHobisch, Mathiasen_US
dc.contributor.authorKostoglou, Nikolaosen_US
dc.contributor.authorAbbas, Qamaren_US
dc.contributor.authorParis, Oskaren_US
dc.contributor.authorMitterer, Christianen_US
dc.contributor.authorHummel, Michaelen_US
dc.contributor.authorSpirk, Stefanen_US
dc.contributor.departmentDepartment of Bioproducts and Biosystemsen
dc.contributor.groupauthorBiorefineriesen
dc.contributor.groupauthorBiopolymer Chemistry and Engineeringen
dc.contributor.organizationUniversity of Leobenen_US
dc.contributor.organizationGraz University of Technologyen_US
dc.date.accessioned2022-09-21T06:04:30Z
dc.date.available2022-09-21T06:04:30Z
dc.date.issued2022-08en_US
dc.descriptionPublisher Copyright: © 2022 by the authors.
dc.description.abstractCoffee, as one of the most traded resources, generates a vast amount of biogenic by-products. Coffee silver skins (CSS), a side stream from the roasting process, account for about 4 wt.%. Despite the abundancy of CSS, possible routes to generate added value for broad applications are limited. Herein, we present an approach to use CSS as a precursor material for supercapacitor electrodes. KOH activated carbon (AC) was produced from CSS. The resulting AC—CSS was characterized by X-ray diffraction, gas sorption analysis, scanning electron microscopy, and Raman spectroscopy. The highly porous AC—CSS exposes a specific surface area of more than 2500 m2 g−1. Electrodes formed with AC—CSS were electrochemically characterized by performing cyclic voltammetry and galvanostatic cycling. The electrodes were further assembled into a supercapacitor device and operated using 1 M sulfuric acid as electrolyte. In addition, various quinones were added to the electrolyte and their impact on the capacitance of AC—CSS electrodes was analyzed. In this work, we were able to show that CSS are a valuable source for supercapacitor applications and that coffee-waste-derived quinones can act as capacitance enhancers. Thus, the findings of this research show a valuable path towards sustainable and green energy storage solutions.en
dc.description.versionPeer revieweden
dc.format.extent15
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationSelinger, J, Stock, S, Schlemmer, W, Hobisch, M, Kostoglou, N, Abbas, Q, Paris, O, Mitterer, C, Hummel, M & Spirk, S 2022, ' Nanoporous Carbon Electrodes Derived from Coffee Side Streams for Supercapacitors in Aqueous Electrolytes ', Nanomaterials, vol. 12, no. 15, 2647 . https://doi.org/10.3390/nano12152647en
dc.identifier.doi10.3390/nano12152647en_US
dc.identifier.issn2079-4991
dc.identifier.otherPURE UUID: 2c4f0ac9-42a1-48f3-a164-ca288ec2b96ben_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/2c4f0ac9-42a1-48f3-a164-ca288ec2b96ben_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85136932880&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/88168279/CHEM_Selinger_Nanoporous_Carbon_Electrodes_2022_Nanomaterials.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/116840
dc.identifier.urnURN:NBN:fi:aalto-202209215638
dc.language.isoenen
dc.publisherMDPI AG
dc.relation.ispartofseriesNanomaterialsen
dc.relation.ispartofseriesVolume 12, issue 15en
dc.rightsopenAccessen
dc.subject.keywordactivated carbonen_US
dc.subject.keywordcoffee silver skinsen_US
dc.subject.keywordcoffee wasteen_US
dc.subject.keywordECDLen_US
dc.subject.keywordelectrodesen_US
dc.subject.keywordquinonesen_US
dc.subject.keywordsupercapacitoren_US
dc.titleNanoporous Carbon Electrodes Derived from Coffee Side Streams for Supercapacitors in Aqueous Electrolytesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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[article-cris] Kemian tekniikan korkeakoulu / CHEM