Cellulose nanocrystal-derived carbon electrodes for sustainable potassium-ion charge storage systems

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dc.contributor.authorOjeda Fernández, Irene
dc.contributor.authorArenas, Cristian B.
dc.contributor.authorCalle-Gil, Raúl
dc.contributor.authorEbrahimi-Koodehi, Soheila
dc.contributor.authorGarcia-Gimenez, Daniel
dc.contributor.authorJosé Torralvo, María
dc.contributor.authorPrado Gonjal, Jesús De La Paz
dc.contributor.authorCarretero-González, Javier
dc.contributor.authorCastillo Martínez, Elisabet
dc.date.accessioned2024-04-25T13:15:49Z
dc.date.available2024-04-25T13:15:49Z
dc.date.issued2024-03-10
dc.description.abstractWe have here produced carbon electrode materials derived from Crystalline NanoCellulose (CNC) for low-cost potassium-ion based energy storage systems through conventional annealing as well as through a fast and energy efficient microwave assisted carbonization process. A two-step 4-minute synthesis with ZnCl2 activation in a domestic microwave leads to a micro/mesoporous carbon with high surface area (SBET~1800 m2 g 1). These CNC-derived carbons, if assessed in symmetric supercapacitor C/C cells cycled with 0.5 M K2SO4 aqueous electrolyte, show reversible capacitance values up to 66 F g 1 at current densities of 5 A g 1, retaining 83% of its initial capacitance after 10.000 cycles without any conducting additive. Due to its large electrochemical window of 1.7 V, a competitive energy density for an aqueous system of 20.9 W h kg 1 is achieved. A hybrid aqueous capacitor built with this carbon as negative electrode and coupled with a Prussian White as positive results in cell capacitance values up to 135 F g 1 under a voltage operation window of 1.8 V in 0.5 M K2SO4. On the other hand, non-activated carbons produced through a 2.25 hour thermal annealing at 900 ◦C, present much lower surface area (SBET~450 m2 g 1), most of it due to its high micropore volume. This low external and mesoporous surface area carbon is a competitive anode material for potassium-ion batteries with a reversible capacity of ~200 mA h g 1 cycled at 28 mA g 1 using 3.9 M KFSI in DME electrolyte (favourably most of it below 1 V vs K+/K) in a potassium half-cell with >80% retention in 100 cycles. The present research shows that sustainable CNC derived carbons produced through energy efficient methods are competitive electrode materials in low-cost K based energy storge systems.
dc.description.departmentDepto. de Química Inorgánica
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.statuspub
dc.identifier.citationOjeda, I.; Arenas, C. B.; Calle-Gil, R.; Ebrahimi-Koodehi, S.; Garcia-Gimenez, D.; Torralvo, M. J.; Prado-Gonjal, J.; Carretero-González, J.; Castillo-Martínez, E. Cellulose nanocrystal-derived carbon electrodes for sustainable potassium-ion charge storage systems. Sustainable Materials and Technologies 2024, 40, e00932 DOI:10.1016/j.susmat.2024.e00932.
dc.identifier.doihttps://doi.org/10.1016/j.susmat.2024.e00932
dc.identifier.issn2214-9937
dc.identifier.urihttps://hdl.handle.net/20.500.14352/103511
dc.journal.titleSustainable Materials and Technologies
dc.language.isoeng
dc.page.initiale00932
dc.publisherElsevier
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu546
dc.subject.keywordEnergy storage
dc.subject.keywordCarbon
dc.subject.keywordCrystalline nanocellulose
dc.subject.keywordSupercapacitorK-ion batteries
dc.subject.keywordAsymmetric capacitor
dc.subject.keywordCNC
dc.subject.keywordHybrid capacitor
dc.subject.keywordAqueous
dc.subject.ucmQuímica inorgánica (Química)
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2210.05 Electroquímica
dc.subject.unesco3322.02 Generación de Energía
dc.subject.unesco2303 Química Inorgánica
dc.titleCellulose nanocrystal-derived carbon electrodes for sustainable potassium-ion charge storage systems
dc.typejournal article
dc.volume.number40
dspace.entity.typePublication
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relation.isAuthorOfPublication7a2b8d3d-7159-48e6-a318-76923a9867ed
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relation.isAuthorOfPublication.latestForDiscoveryb4631aae-bbc4-470a-922b-73f321e2515a
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