Anode‐Free Design with Pelletized Aluminium Current Collector Enables High‐Energy‐Density Sodium All‐Solid‐State Batteries

A commentary on an anode‐free cell design with electrochemically stable sodium borohydride solid electrolyte and pelletized aluminium current collector for sodium all‐solid‐state batteries is presented. First, the viable strategies for implementing anode‐free configuration utilizing solid‐state electrolytes are briefly reviewed. Then, the remarkable work of Meng et al. on designing an anode‐free sodium all‐solid‐state battery is elucidated. Finally, the significance of Meng's work is discussed.