▎ 摘　　要

NOVELTY - The material is carbon micro-fiber, restored oxide graphene, and manganese dioxide nanowire of sea urchin shape. The carbon micro-fiber is coated with the restored oxide graphene. Microsphere of sea urchin shape is coated with the restored oxide graphene. The microsphere of the sea urchin shape is composed of manganese dioxide nanowire arranged to radial. USE - Material of air electrode of metal-air battery e.g. second aqueous sodium superoxide battery (all claimed). Can also be used in lithium ion battery (LIB) used in cellular phone, camera, laptop computer, electric vehicle and hybrid electricity vehicle. ADVANTAGE - The durability and electrochemical characteristic of the battery are improved. The rechargeability of the battery is excellent. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for manufacturing material; and (2) a metal-air battery. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating the manufacturing of material. (Drawing includes non-English language text)