Patent ID: 8546036
Filing Date: 2013-10-01
Classification: H01M,Y02E

Abstract:
1. A fuel cell formed by stacking electrolyte electrode assemblies between separators, the electrolyte electrode assemblies each including an anode, a cathode, and an electrolyte interposed between the anode and the cathode, the separators each comprising: sandwiching sections sandwiching the electrolyte electrode assemblies, the sandwiching sections each having a fuel gas channel for supplying a fuel gas along an electrode surface of the anode and an oxygen-containing gas channel for supplying an oxygen-containing gas along an electrode surface of the cathode separately; bridges connected to the sandwiching sections, the bridges each having a reactant gas supply channel for supplying the fuel gas to the fuel gas channel or supplying the oxygen-containing gas to the oxygen-containing gas channel; and a first reactant gas supply section connected to the bridges, a reactant gas supply passage extending through the first reactant gas supply section in a stacking direction for supplying the fuel gas or the oxygen-containing gas to the reactant gas supply channel, the first reactant gas supply section being provided at the center of the separator; a second reactant gas supply section for allowing the oxygen-containing gas or the fuel gas to flow in the stacking direction, and supplying the oxygen-containing gas to the oxygen-containing gas channel or supplying the fuel gas to the fuel gas channel; and a flow rectifier member to channel fluid flow provided between adjacent sandwiching sections, for rectifying the flow of the oxygen-containing gas flowing through the oxygen-containing gas channel or the fuel gas flowing through the fuel gas channel, along a surface of the electrolyte electrode assembly from at least the second reactant gas supply section, wherein the electrolyte electrode assemblies are arranged concentrically around the first reactant gas supply section, and the flow rectifier member is provided along part of an outer circumferential portion of the sandwiching section and part of a circumscribed circle of the separator, and wherein one end of the flow rectifier member along part of the sandwiching section is provided near joint portions between the sandwiching sections and the bridges, along a surface of each of the separators, and wherein the flow rectifier member is made of electrically insulating material.