Superionic conducting vacancy-rich β-Li₃N electrolyte for stable cycling of all-solid-state lithium metal batteries.

ABSTRACT: The advancement of all-solid-state lithium metal batteries requires breakthroughs in solid-state electrolytes (SSEs) for the suppression of lithium dendrite growth at high current densities and high capacities (>3 mAh cm^-2) and innovation of SSEs in terms of crystal structure, ionic conductivity and rigidness. Here we report a superionic conducting, highly lithium-compatible and air-stable vacancy-rich β-Li₃N SSE. This vacancy-rich β-Li₃N SSE shows a high ionic conductivity of 2.14 × 10^-3 S cm^-1 at 25 °C and surpasses almost all the reported nitride-based SSEs. A Li- and N-vacancy-mediated fast lithium-ion migration mechanism is unravelled regarding vacancy-triggered reduced activation energy and increased mobile lithium-ion

SUBMITTER: Li W 

PROVIDER: S-EPMC11835732 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature