All-solid state 1 All-solid state battery 1 All-solid-state battery 1 Covalent bonds 1 Electrode active materials 1 Electrodes 1 High safety 1 Higher energy density 1 Layered semiconductors 1 Mechanochemical synthesis 1 Molybdenum compounds 1 Molybdenum sulfide Positive electrode 1 Positive electrodes 1 Sodium 1 Sodium battery 1 Sodium compounds 1 Sodium secondary batteries 1 Solid electrolytes 1 Solid-State Batteries 1 Solid-state cells 1 Sulfur compounds 1 X ray photoelectron spectroscopy 1