Dry-Electrode All-Solid-State Batteries Fortified with a Moisture Absorbent

For realizing all-solid-state batteries (ASSBs), it ishighly desirableto develop a robust solid electrolyte (SE) that has exceptional ionicconductivity and electrochemical stability at room temperature. Whileargyrodite-type Li6PS5Cl (LPSCl) SE has garneredattention for its relatively high ionic conductivity (& SIM;3.19x 10(-3) S cm(-1)), it tendsto emit hydrogen sulfide (H2S) in the presence of moisture,which can hinder the performance of ASSBs. To address this issue,researchers are exploring approaches that promote structural stabilityand moisture resistance through elemental doping or substitution.Herein, we suggest using zeolite imidazolate framework-8 as a moistureabsorbent in LPSCl without modifying the structure of the SE or theelectrode configuration. By incorporating highly ordered porous materials,we demonstrate that ASSBs configured with LPSCl SE display stablecyclability due to effective and long-lasting moisture absorption.This approach not only improves the overall quality of ASSBs but alsolays the foundation for developing a moisture-resistant sulfide electrolyte.