▎ 摘　　要

NOVELTY - Current collector (100) and cathode material (130) comprise a graphene film (110), and ultrafine manganese oxide particles (120) and mesoporous manganese oxide particles coated on the graphene film. USE - The current collector and cathode material are useful for zinc-ion battery. ADVANTAGE - The current collector and cathode material provide excellent energy storage performance to zinc-ion battery due to presence of mesoporous manganese oxide particles and simultaneous formation of ultra-fine manganese oxide particles serving as cathode material of zinc-ion battery; and improves adhesion between material and current collector. The zinc-ion battery has excellent capacity and cycling performance, electrical conductivity by removing oxygen functional groups, charge transfer, ion diffusion ability, and specific capacitance, and excellent energy storage performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: manufacturing current collector and cathode material; and zinc-ion battery. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the current collector and cathode material. 100Current collector 110Graphene film 120Ultrafine manganese oxide particles 130Cathode material