Solid oxide fuel cell

摘要

A solid oxide fuel cell scatters MgO over a grain boundary of an LSGM which is a solid electrolyte layer. Ni components that diffuse from a fuel electrode formed on the other side of an LDC from the LSGM are trapped by the scattered MgO particles and are suppressed from diffusing towards an air electrode in the electrolyte layer.

主权项

1. A solid oxide fuel cell comprising:
a solid electrolyte layer that is formed in a layer; a fuel electrode that is formed on a first side of the solid electrolyte layer wherein a fuel gas flows through the fuel electrode to reach the solid electrolyte layer; and an air electrode that is formed on a second side of the solid electrolyte layer wherein an oxidant gas flows through the air electrode to reach the solid electrolyte layer, wherein the fuel electrode comprises at least one of Ni and NiO, wherein the solid electrolyte layer comprises a lanthanum gallate oxide represented by a general formula of La1-aSraGa1-bMgbO3 (wherein 0.05≦a≦0.3, 0≦b≦0.3) and MgO, and wherein in the solid electrolyte layer MgO as a particulate MgO particle is spotted at a grain boundary of particles made of the lanthanum gallate oxide as a main component thereof.