Interconnect-electrochemical reaction single cell complex, and electrochemical reaction cell stack

摘要

It is suppressed that the sealing property of a fuel gas flow path falls because of the reduction reaction of a 1st coat and a fuel gas. The interconnector-electrochemical reaction unit cell composite includes an electrochemical reaction unit cell and a first through hole constituting the fuel gas flow path, and an interconnector disposed on the fuel electrode side of the electrochemical reaction unit cell. The interconnect includes a coat constituting a first surface opposite the anode side of the interconnect, the coat being a region of a portion of the first surface of the interconnect, spaced apart from the first through hole. A region of the first coat and a part of the first surface of the interconnector, which surrounds the first through hole, and constitutes a second surface region between the first coat and the first through hole, A second coat having high reduction resistance is provided.