| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that, in a gas diffusion layer containing a conventional carbon fiber base material as a main component, it is difficult to perform marking on the surface with excellent visibility.SOLUTION: Disclosed is a plate-shaped gas diffusion layer for a fuel cell containing a conductive particle and a polymeric resin as a main component. On at least one surface of the gas diffusion layer, an uneven shaped production management mark is formed, and a method of manufacturing the gas diffusion layer is provided. By marking an uneven shaped stamp on the surface of the gas diffusion layer, the marking having excellent visibility and high definition is enabled and useful for production management. |
