LITHIUM-AIR BATTERY CATALYST HAVING 1D POLYCRYSTALLINE TUBE STRUCTURE OF RUTHENIUM OXIDE - MANGANESE OXIDE COMPLEX, AND MANUFACTURING METHOD THEREOF

A lithium-air battery catalyst having a 1D polycrystalline tubes structure of a ruthenium oxide-manganese oxide complex includes the ruthenium oxide-manganese oxide complex having at least one polycrystalline tubes structure among a core fiber-shell patterned nanotubes structure and a double walls patterned composite double tubes structure, and the ruthenium oxide-manganese oxide complex is formed as an air electrode catalyst.