| abstract |
Even if the anode electrode layer provided in the fuel cell is on the order of several tens of microns, a highly efficient fuel cell capable of rational and efficient use of the internal reforming reaction is obtained. It is configured as a fuel cell single cell unit (U) having a reducing gas supply path (L1) for supplying a gas containing hydrogen to the anode electrode layer (A), and the water vapor generated in the fuel cell (R) is a reducing gas supply path. A steam supply path (L3a) supplied to (L1) and an internal reforming catalyst layer (D) for generating hydrogen by a steam reforming reaction from raw fuel gas is provided in the fuel cell single cell unit (U), and an anode electrode layer (A) In the flow direction of the reducing gas supplied to ), at least one steam supply path L3a is provided upstream of the internal reforming catalyst layer D. |