| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a diffusion layer, capable of producing a diffusion layer in which seepage pressure is effectively reduced.SOLUTION: The method for producing a diffusion layer includes: a water impregnation step of impregnating a diffusion layer base material 21 with pure water W; a coating step of coating the diffusion layer base material 21 impregnated with the pure water W with a porous thin film paste 22; and a firing step of firing the diffusion layer base material 21 coated with the porous thin film paste 22. |
