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Direct correlation between void formation and lithium dendrite growth in solid-state electrolytes with interlayers

Nature Materials, ISSN: 1476-4660, Vol: 21, Issue: 9, Page: 1050-1056
2022
  • 127
    Citations
  • 0
    Usage
  • 125
    Captures
  • 7
    Mentions
  • 20
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    127
  • Captures
    125
  • Mentions
    7
    • News Mentions
      7
      • News
        7
  • Social Media
    20
    • Shares, Likes & Comments
      20
      • Facebook
        20

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Interface design for all-solid-state lithium batteries

Nature, Published online: 25 October 2023; doi:10.1038/s41586-023-06653-w The inclusion of a Mg–Bi-based interlayer between the lithium metal and solid electrolyte and a F-rich interlayer on the cathode improves the stability and performance of solid-state lithium-metal batteries.

Article Description

Solid-state Li-ion batteries with lithium anodes offer higher energy densities and are safer than conventional liquid electrolyte-based Li-ion batteries. However, the growth of lithium dendrites across the solid-state electrolyte layer leads to the premature shorting of cells and limits their practical viability. Here, using solid-state Li half-cells with metallic interlayers between a garnet-based lithium-ion conductor and lithium, we show that interfacial void growth precedes dendrite nucleation and growth. Specifically, void growth was observed at a current density of around two-thirds of the critical current density for dendrite growth. Computational calculations reveal that interlayer materials with higher critical current densities for dendrite growth also have the largest thermodynamic and kinetic barriers for lithium vacancy accumulation at their interfaces with lithium. Our results suggest that interfacial modification with suitable metallic interlayers decreases the tendency for void growth and improves dendrite growth tolerance in solid-state electrolytes, even in the absence of high stack pressures.

Bibliographic Details

Raj, Vikalp; Venturi, Victor; Kankanallu, Varun R; Kuiri, Bibhatsu; Viswanathan, Venkatasubramanian; Aetukuri, Naga Phani B

Springer Science and Business Media LLC

Chemistry; Materials Science; Physics and Astronomy; Engineering

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