▎ 摘　　要

NOVELTY - A gas diffusion layer (100) for a metal-air battery (1) comprises a porous layer comprising non-conductive fiber structures and adhesive layers and conductive carbon layers, where each of adhesive layers and each of conductive carbon layers is disposed on a surface of each non-conductive fiber structure of non-conductive fiber structures, where each conductive carbon layer comprises a carbon material, where an adhesive layer is disposed on the surface of each non-conductive fiber structure and conductive carbon layer is disposed directly on a surface of the adhesive layer, and where the adhesive layer bonds the conductive carbon layer to the surface of each non-conductive fiber structure, where a thickness of the conductive carbon layer is 1-10% of the average thickness of non-conductive fiber structure and the adhesive layers and conductive carbon layers are alternately arranged three or more times on the surface of each non-conductive fiber structure. USE - A gas diffusion layer for a metal-air battery (claimed). ADVANTAGE - The energy density of the metal-air battery may be improved when weight of a gas diffusion layer included in a metal-air battery is reduced. The metal-air battery has improved electrical conductivity, improved gas diffusivity, uniform mechanical strength, and reduced weight. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (A) manufacturing the gas diffusion layer (100) for a metal-air battery (1) which involves disposing an adhesive layer on the surface of each non-conductive fiber structure; and contacting the adhesive layer with the carbon material to form the conductive carbon layer comprising the carbon material on the surface of each non-conductive fiber structure to manufacture the gas diffusion layer; and (B) metal-air battery comprising a negative electrode comprising a metal; a positive electrode comprising a positive electrode layer (13) comprising a catalyst and a gas diffusion layer for the metal-air battery; and an electrolyte between the negative electrode and positive electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of the metal-air battery having a two-dimensional (2D) flat-cell shape. Metal-air battery (1) Negative electrode metal layer (11) Negative electrode electrolyte membrane (12) Positive electrode layer (13) Gas diffusion layer (100)