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.