Abstract
As a more effective and scalable substitute for conventional solid-state syntheses, solution synthesis of electrolytes for all solid-state batteries attracts a lot of attention. Sodium tetrathioantimonate Na3SbS4 is a promising solid electrolyte (SE) for all-solid-state sodium ion batteries. Dimethyl sulfoxide solvent was used for the first time as a reaction medium. The Na3SbS4 powder is made of agglomerated irregular particles, and exhibits a Na-ionic conductivity at room temperature of 2.74·10−4 S/cm coupled with a low activation energy of 0.26 eV. The current route using dimethyl sulfoxide solvent would be an alternative approach for the production of high-performance solid electrolytes.