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Abstract

Provided is a solid oxide fuel cell stack including: a porous insulating support having a gas permeability and provided with a gas flow path therein; and a plurality of power generating elements which are provided on the insulating support and each of which includes an inner electrode, an electrolyte. An outer electrode, the inner electrode, the electrolyte and the outer electrode are sequentially laminated one another, and the inner electrode of one of adjacent two of the plurality of power generating elements is electrically connected to the outer electrode of the other of the adjacent two of the plurality of power generating elements via an interconnector, so that the plurality of power generating elements are connected in series, wherein the insulating support comprises forsterite, the insulating support contains a Mg element and a Si element with a concentration of 90 mass % or more in total in terms of MgO and SiO₂, at least in a surface region on the power generating elements side, and the interconnector comprises titanium-based perovskite type oxide represented by (A,B)(Ti,C)O_3-δ.

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First Claim