▎ 摘　　要

NOVELTY - Gas diffusion layer, comprises a substrate layer and a substrate microporous layer, where the microporous layer is prepared by coating the easily degradable slurry fiber on one side of the substrate layer surface. USE - The gas diffusion layer is useful for preparing fuel cell (claimed). ADVANTAGE - The diffusion layer: is easy to degrade the fiber added in the microporous layer; reduce the non-through hole proportion in the microporous layer; enhance the fuel cell in the work lifting mass transfer efficiency and drainage performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the gas diffusion layer. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron micrograph/microscopic photograph of the gas diffusion layer for fuel cell.