A solid-state battery is an electrical battery that uses a solid electrolyte for ionic conductions between the electrodes, instead of the liquid or gel polymer electrolytes found in conventional batteries.[1] Solid-state batteries theoretically offer much higher energy density than the typical lithium-ion or lithium polymer batteries.[2] Solid-state batteryAll-solid-state battery with a solid electrolyte between two electrodesSpecific energyThin film type: 300–900 Wh/kg (490–1,470 kJ/lb)Bulk typ...