Ultrahigh Areal Capacity Li Electrodeposition at Metal-Solid Electrolyte Interfaces under Minimal Stack Pressures Enabled by Interfacial Na-K Liquids.

ABSTRACT: The need for higher energy density rechargeable batteries has generated interest in metallic electrodes paired with solid electrolytes. However, impedance growth at the Li metal-solid electrolyte interface due to void formation during cycling at practical current densities and areal capacities, e.g., greater than 0.5 mA cm^-2 and 1.5 mAh cm^-2 respectively, remains a significant barrier. Here, we show that introducing a wetting interfacial film of Na-K liquid between the Li metal and the Li_6.75La₃Zr_1.75Ta_0.25O₁₂ (LLZTO) solid electrolyte permits reversible stripping and plating of up to 150 μm of Li (30 mAh cm^-2), approximately 10 times the areal capacity of today's lithium-ion batteries, at current densi

SUBMITTER: Park RJ 

PROVIDER: S-EPMC10401566 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature