An electron-blocking interface for garnet-based quasi-solid-state lithium-metal batteries to improve lifespan.

ABSTRACT: Garnet oxide is one of the most promising solid electrolytes for solid-state lithium metal batteries. However, the traditional interface modification layers cannot completely block electron migrating from the current collector to the interior of the solid-state electrolyte, which promotes the penetration of lithium dendrites. In this work, a highly electron-blocking interlayer composed of potassium fluoride (KF) is deposited on garnet oxide Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (LLZTO). After reacting with melted lithium metal, KF in-situ transforms to KF/LiF interlayer, which can block the electron leakage and inhibit lithium dendrite growth. The Li symmetric cells using the interlayer show a long cycle life of ~3000 hours at 0.2 mA cm^-2 a

SUBMITTER: Zhang C 

PROVIDER: S-EPMC11193789 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature