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Design and fabrication of low-cost renewable carbon electrode materials and their thermo-kinetics for sustainable energy storage applications
Institute of Forestry and Conservation, University of Toronto, 33 Willcocks Street, Toronto, ON, M5S 3B3, Canada.ORCID iD: 0000-0002-6842-995x
Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, ON M5S 3E4, Canada.
Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada.
Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada.
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2022 (English)In: Materials Today Sustainability, E-ISSN 2589-2347, Vol. 20, article id 100245Article in journal (Refereed) Published
Abstract [en]

To date, there have been few studies performed on the kinetics of thermal decomposition of renewable carbon and its use in energy storage devices. Novel renewable graphitic carbon from Acer saccharum, sugar maple (SM) heartwood, and Arachis hypogaea, peanut outer shell (PS), are used as anodes in lithium-ion coin cell batteries, with steady specific capacities of 180 mAh/g and 220 mAh/g, respectively, and both retain 100% columbic efficiency for over 350 cycles. Cyclic voltammetry reveals the different charge storage kinetic mechanisms of the two. The voltammogram of SM contains an oxidation peak indicating Li ion intercalation suitable for battery application, while PS lacks a peak; thus, showing potential for function as a supercapacitor. A kinetic study is undertaken on six carbon sources to improve the understanding of the thermal degradation process leading to renewable graphitic carbon. Consistent results are shown across the various model-free methods, indicating that they can accurately describe the devolatilization process. The renewable graphitic carbons morphological features were studied by SEM, XRD, Raman and nitrogen adsorption isotherms. As SM and PS compare favorably to the electrodes they replace, renewable graphitic carbon has the potential for use in a wide variety of novel applications, such as organic thin film transistors, fuel cells, organic batteries, supercapacitors, and other bioelectronics.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 20, article id 100245
Keywords [en]
Electrodes, Peanut shell, Reaction kinetics, Renewable graphitic carbon, Sugar maple
National Category
Chemical Engineering
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-94181DOI: 10.1016/j.mtsust.2022.100245ISI: 000882523800005Scopus ID: 2-s2.0-85141252216OAI: oai:DiVA.org:ltu-94181DiVA, id: diva2:1712736
Note

Validerad;2022;Nivå 2;2022-11-22 (hanlid);

Funder: University of Toronto (XSeed grant); Ontario Research Fund

Available from: 2022-11-22 Created: 2022-11-22 Last updated: 2023-09-05Bibliographically approved

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Oksman, Kristiina

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