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  2. Electrochemical Investigation of Calcium Substituted Monoclinic Li3V2(PO4)3 Negative Electrode Materials for Sodium- and Potassium-Ion Batteries
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    Datenpaket: Electrochemical Investigation of Calcium Substituted Monoclinic Li3V2(PO4)3 Negative Electrode Materials for Sodium- and Potassium-Ion Batteries

    Alternativer Identifier:
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    Verwandter Identifier:
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    Ersteller/in:
    Fu, Qiang [Energiespeichersysteme]

    Guo, Bingrui [Energiespeichersysteme]

    Hua, Weibo [Energiespeichersysteme]

    Sarapulova, Angelina [Energiespeichersysteme]

    Zhu, Lihua [Energiespeichersysteme]

    Weidler, Peter G. [Institut für Funktionelle Grenzflächen]

    Missyul, Alexander [Missyul, Alexander]

    Knapp, Michael https://orcid.org/0000-0003-0091-8463 [Energiespeichersysteme]

    Ehrenberg, Helmut [Energiespeichersysteme]

    Dsoke, Sonia https://orcid.org/0000-0001-9295-2110 [Energiespeichersysteme]
    Beitragende:
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    Titel:
    Electrochemical Investigation of Calcium Substituted Monoclinic Li3V2(PO4)3 Negative Electrode Materials for Sodium- and Potassium-Ion Batteries
    Weitere Titel:
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    Beschreibung:
    (Abstract) Herein, the electrochemical properties and reaction mechanism of Li3-2xCaxV2(PO4)3/C (x = 0, 0.5, 1, and 1.5) as negative electrode materials for sodium-ion/potassium-ion batteries (SIBs/PIBs) are investigated. All samples undergo a mixed contribution of diffusion-controlled and pseudocapacitive-type processes in SIBs and PIBs via Trasatti Differentiation Method, while the latter increases with Ca content increase. Among them, Li3V2(PO4)3/C exhibits the highest reversible capacity in SIBs and PIBs, while Ca1.5V2(PO4)3/C shows the best rate performance with a capacity retention of 46% at 20 C in SIBs and 47% at 10 C in PIBs. This study demonstrates that the specific capacity of this type of material in SIBs and PIBs does not increase with the Ca-content as previously observed in lithium-ion system, but the stability and performance at a high C-rate can be improved by replacing Li+ with Ca2+. This indicates that insertion of different monovalent cations (Na+/K+) can strongly influence the redox reaction and structure evolution of the host materials, due to the larger ion size of Na+ and K+ and their different kinetic properties with respect to Li+. Furthermore, the working mechanism of both LVP/C and Ca1.5V2(PO4)3/C in SIBs are elucidated via in operando synchrotron diffraction and in operando X-ray absorption spectroscopy.
    (Technical Remarks) Datasets and proceeded data
    Schlagworte:
    Monoclinic Li3V2(PO4)3
    Negative electrode materials
    Electrochemical performance
    Sodium-ion batteries
    Potassium-ion batteries
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    Sprache:
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    Herausgeber/in:
    Karlsruhe Institute of Technology
    Erstellungsjahr:
    Fachgebiet:
    Engineering
    Objekttyp:
    Dataset
    Datenquelle:
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    Verwendete Software:
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    Datenverarbeitung:
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    Erscheinungsjahr:
    Rechteinhaber/in:
    Fu, Qiang

    Guo, Bingrui

    Hua, Weibo

    Sarapulova, Angelina

    Zhu, Lihua

    Weidler, Peter G.

    Missyul, Alexander

    Ehrenberg, Helmut
    Förderung:
    -
    Name Speichervolumen Metadaten Upload Aktion
    Status:
    Publiziert
    Eingestellt von:
    kitopen
    Erstellt am:
    Archivierungsdatum:
    2023-06-30
    Archivgröße:
    636,1 MB
    Archiversteller:
    kitopen
    Archiv-Prüfsumme:
    7f2f86bb756cd270109d9656ec1d0663 (MD5)
    Embargo-Zeitraum:
    2023-07-13