| 摘要 |
PURPOSE:To enhance gas impermeability and eliminate secular deterioration by widthwisely dividing a separator plate with grooves into two layers, and inserting a gas permeation preventing layer between the two layers resulting in a formed three-layer structure. CONSTITUTION:A separate plate 15 with grooves is widthwisely divided into two layers. A separator plate 16 having grooves 15 on one surface, another separator plate 17 having grooves 7 on the other surface and a gas permeation preventing layer 20 held between the plates 16, 17 are formed in a three-layer structure. The preventing layer 20 prevents hydrogen permeating through the plate 16 from permeating through the plate 17 on a reactive air side. A smooth surface of one of the plates 16 and 17 facilitates forming, thereby enhancing impermeability of gas more. |
