Simple surface treatment improves performance of carbon materials for sodium ion battery anodes
Aina, Sergio (Universidad de Zaragoza) ; Tratnik, Blaz ; Vizintin, Alen ; Tchernychova, Elena ; Lobera, M. Pilar (Universidad de Zaragoza) ; Dominko, Robert ; Bernechea, María
Resumen: Hard carbons are the most extended anode materials for sodium-ion batteries (SIBs); however, they suffer from several limitations such as low stability, poor rate performance and low initial Coulombic efficiency (iCE). Herein, a simple, fast, and low-cost surface treatment at room temperature using short-chain organic molecules: 3-mercaptopropionic acid (MPA), 1,2-ethanedithiol (EDT) and oxalic acid (OxA) has been applied to a hard carbon (C1400). The carbons treated with sulfur containing molecules (MPA or EDT) exhibit higher capacity (12 % capacity enhancement after 100th cycles at C/10 and 18 % enhancement at 1C vs. C1400). The introduction of these ligands leads to improved micropore blockage, helping in the reversible insertion of Na ions. Moreover, ex-situ X-ray photoelectron spectroscopy (XPS) analyses demonstrate that thiol functional groups promote the formation of favorable NaF and Na2O-rich solid electrolyte interfaces (SEI) leading to and faster sodium diffusion in the plateau region. Additionally, MPA and EDT treatments have been applied to a soft carbon (Vulcan XC-72R) resulting in a substantial 30 % capacity improvement after 100 cycles at 1C. These results demonstrate the wide applicability of the method as a straightforward and efficient strategy for improving the electrochemical properties of carbon anodes used in SIBs.
Idioma: Inglés
DOI: 10.1016/j.jpowsour.2024.234730
Año: 2024
Publicado en: JOURNAL OF POWER SOURCES 610 (2024), 234730 [12 pp.]
ISSN: 0378-7753
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1
Financiación: info:eu-repo/grantAgreement/ES/MINECO/PCI2019–10363
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1016/j.jpowsour.2024.234730
Año: 2024
Publicado en: JOURNAL OF POWER SOURCES 610 (2024), 234730 [12 pp.]
ISSN: 0378-7753
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1
Financiación: info:eu-repo/grantAgreement/ES/MINECO/PCI2019–10363
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2024-06-14-09:00:25)
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Record created 2024-06-14, last modified 2024-06-14