Dry-Electrode All-Solid-State\nBatteries Fortified\nwith a Moisture Absorbent

For realizing all-solid-state batteries (ASSBs), it is\nhighly desirable\nto develop a robust solid electrolyte (SE) that has exceptional ionic\nconductivity and electrochemical stability at room temperature. While\nargyrodite-type Li<sub>6</sub>PS<sub>5</sub>Cl (LPSCl) SE has garnered\nattention for its relatively high ionic conductivity (∼3.19\n× 10<sup>–3</sup> S cm<sup>–1</sup>), it tends\nto emit hydrogen sulfide (H<sub>2</sub>S) in the presence of moisture,\nwhich can hinder the performance of ASSBs. To address this issue,\nresearchers are exploring approaches that promote structural stability\nand moisture resistance through elemental doping or substitution.\nHerein, we suggest using zeolite imidazolate framework-8 as a moisture\nabsorbent in LPSCl without modifying the structure of the SE or the\nelectrode configuration. By incorporating highly ordered porous materials,\nwe demonstrate that ASSBs configured with LPSCl SE display stable\ncyclability due to effective and long-lasting moisture absorption.\nThis approach not only improves the overall quality of ASSBs but also\nlays the foundation for developing a moisture-resistant sulfide electrolyte.