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Li1.5La1.5MO6 (M = W6+, Te6+) as a new series of lithium-rich double perovskites for all-solid-state lithium-ion batteries

Author

Listed:
  • Marco Amores

    (University of Sheffield)

  • Hany El-Shinawi

    (University of Sheffield
    The Faraday Institution, Harwell Campus)

  • Innes McClelland

    (University of Sheffield)

  • Stephen R. Yeandel

    (Loughborough University)

  • Peter J. Baker

    (Harwell Science and Innovation Campus)

  • Ronald I. Smith

    (Harwell Science and Innovation Campus)

  • Helen Y. Playford

    (Harwell Science and Innovation Campus)

  • Pooja Goddard

    (Loughborough University)

  • Serena A. Corr

    (University of Sheffield
    University of Sheffield)

  • Edmund J. Cussen

    (University of Sheffield
    University of Sheffield)

Abstract

Solid-state batteries are a proposed route to safely achieving high energy densities, yet this architecture faces challenges arising from interfacial issues between the electrode and solid electrolyte. Here we develop a novel family of double perovskites, Li1.5La1.5MO6 (M = W6+, Te6+), where an uncommon lithium-ion distribution enables macroscopic ion diffusion and tailored design of the composition allows us to switch functionality to either a negative electrode or a solid electrolyte. Introduction of tungsten allows reversible lithium-ion intercalation below 1 V, enabling application as an anode (initial specific capacity >200 mAh g-1 with remarkably low volume change of ∼0.2%). By contrast, substitution of tungsten with tellurium induces redox stability, directing the functionality of the perovskite towards a solid-state electrolyte with electrochemical stability up to 5 V and a low activation energy barrier (

Suggested Citation

  • Marco Amores & Hany El-Shinawi & Innes McClelland & Stephen R. Yeandel & Peter J. Baker & Ronald I. Smith & Helen Y. Playford & Pooja Goddard & Serena A. Corr & Edmund J. Cussen, 2020. "Li1.5La1.5MO6 (M = W6+, Te6+) as a new series of lithium-rich double perovskites for all-solid-state lithium-ion batteries," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19815-5
    DOI: 10.1038/s41467-020-19815-5
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