Patent ID: 7186475
Filing Date: 2007-03-06
Classification: H01M,Y02E,Y02P

Abstract:
1. A cell unit for a solid electrolyte fuel cell, comprising: an air electrode; a fuel electrode; a solid electrolyte sandwiched between the air electrode and the fuel electrode; and a porous metallic base body joined to at least one of the air electrode and the fuel electrode to form a sandwiched body, wherein the porous metallic base body allows at least one of oxidizing gas, to be supplied to the air electrode, and fuel gas, to be supplied to the fuel electrode, to flow through the porous metallic base body while allowing a cell power output to be collected through the porous metallic base body from reacting areas provided by the sandwiched body composed of the air electrode, the fuel electrode and the solid electrolyte, the porous metallic base body including a plurality of porous base body layers stacked to form a continuous laminated structure in which a first layer joined to at least one of the air electrode and the fuel electrode is set to exhibit porosity, lower than that of a second layer not joined to the at least one of the air electrode and the fuel electrode, and the first layer including a metallic sintered body to define a dimension in a thickness direction of the first layer of the porous metallic base body, so as to allow the at least one of the air electrode and the fuel electrode to be layered to the first layer of the porous metallic base body with a thinned film structure in which a thickness of the at least one of the air electrode and the fuel electrode is thinner than that of the first layer, and the first layer and the second layer are in direct contact with each other.