Patent ID: 10978714

Abstract:
A fuel battery cell comprising a battery structure 1 and a support plate 2, the battery structure 1 having a power generation region G of a lamination of an anode electrode layer 4, an electrolyte layer 5, and a cathode electrode layer 6, and the support plate 2 being made of metal, being disposed on the anode electrode layer 4 side of the battery structure 1, in which the support plate 2 integrally includes a main body part 2A and a frame part 2B, the main body part 2A having gas permeability, the frame part 2B having gas impermeability and having small thickness, the support plate 2B has a step surface 2D between the main body part 2A and the frame part 2B, on the surface on the anode electrode layer 4 side, and the electrolyte layer 5 is disposed in a way it extends to the step surface 2D and the frame part 2B, is provided. A risk of application of a tensile load to the electrolyte layer 5 is removed, when the support plate 2 thermally expands during power generation, whereby a good gas barrier property at an end part of the battery structure 1 is maintained.