▎ 摘　　要

NOVELTY - A secondary battery comprises a solid electrolyte comprising sparked reduced graphene oxide and ( beta )-alumina and a negative electrode comprising a liquid metal. USE - Secondary battery used for energy storage systems. ADVANTAGE - The secondary battery has excellent charging/discharging capacity, efficiency, stability even after repeated cycle, and durability, by improving the wettability of ( beta )-alumina to the liquid metal. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the secondary battery.