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Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors
University of Miskolc, Hungary.
University of Miskolc, Hungary.
RISE Research Institutes of Sweden, Bioeconomy and Health, Biorefinery and Energy. Luleå University of Technology, Sweden.ORCID iD: 0000-0002-9395-9928
RISE Research Institutes of Sweden, Bioeconomy and Health, Biorefinery and Energy. DTU Technical University of Denmark, Denmark.
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2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 11786Article in journal (Refereed) Published
Abstract [en]

Plastic waste has become a major global environmental concern. The utilization of solid waste-derived porous carbon for energy storage has received widespread attention in recent times. Herein, we report the comparison of electrochemical performance of porous carbon foams (CFs) produced from waste polyurethane (PU) elastomer templates via two different activation pathways. Electric double-layer capacitors (EDLCs) fabricated from the carbon foam exhibited a gravimetric capacitance of 74.4 F/g at 0.1 A/g. High packing density due to the presence of carbon spheres in the hierarchical structure offered excellent volumetric capacitance of 134.7 F/cm3 at 0.1 A/g. Besides, the CF-based EDLCs exhibited Coulombic efficiency close to 100% and showed stable cyclic performance for 5000 charge–discharge cycles with good capacitance retention of 97.7% at 3 A/g. Low equivalent series resistance (1.05 Ω) and charge transfer resistance (0.23 Ω) due to the extensive presence of hydroxyl functional groups contributed to attaining high power (48.89 kW/kg). Based on the preferred properties such as high specific surface area, hierarchical pore structure, surface functionalities, low metallic impurities, high conductivity and desirable capacitive behaviour, the CF prepared from waste PU elastomers have shown potential to be adopted as electrodes in EDLCs. © 2022, The Author(s).

Place, publisher, year, edition, pages
Nature Research , 2022. Vol. 12, no 1, article id 11786
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Other Electrical Engineering, Electronic Engineering, Information Engineering
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URN: urn:nbn:se:ri:diva-59820DOI: 10.1038/s41598-022-16006-8Scopus ID: 2-s2.0-85133938642OAI: oai:DiVA.org:ri-59820DiVA, id: diva2:1685709
Note

Funding details: European Commission, EC; Funding details: Javna Agencija za Raziskovalno Dejavnost RS, ARRS, P2-0089; Funding details: European Regional Development Fund, ERDF, GINOP-2.3.4-15-2016-00004; Funding text 1: Open access funding provided by University of Miskolc. This research was supported by the European Union and the Hungarian State, co-financed by the European Regional Development Fund in the framework of the GINOP-2.3.4-15-2016-00004 project, aimed at promoting the cooperation between higher education and industry.; Funding text 2: Z.N. would like to thank the HAS Bolyai János Research Scholarship Program. S.G. acknowledges the financial support from the Slovenian Research Agency (research core funding Nos. P2-0089).

Available from: 2022-08-04 Created: 2022-08-04 Last updated: 2023-05-19Bibliographically approved

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Wiinikka, Henrik

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