| 摘要 |
The present invention discloses a fuel cell, oxygen generator or high temperature electrolyser comprising a metallic substrate comprising: <SL> <LI>(i) at least one porous region comprising a plurality of pores in said metallic substrate, where the porosity varies in at least one direction substantially coincident with the path or paths of a reactant stream to be passed over the substrate when in use and/or in areas of in-use poor gas flow; and <LI>(ii) at least one non-porous region bounding the at least one porous region, and having mounted on said metallic substrate an electrode of said fuel cell, oxygen 15 generator or high temperature electrolyser. </SL> Also disclosed are fuel cell stack layers and fuel cell stacks comprising same. |
