Patent ID: 8153325

Claim:
A fuel cell formed by stacking a plurality of power generation units, the power generation units each comprising first and second electrolyte electrode assemblies, and formed by stacking the first electrolyte electrode assembly on a first separator, a second separator on the first electrolyte electrode assembly, the second electrolyte electrode assembly on the second separator, a third separator on the second electrolyte electrode assembly, the first and second electrolyte electrode assemblies each including a pair of electrodes and an electrolyte interposed between the electrodes, a reactant gas passage for at least a fuel gas or an oxygen-containing gas as one of reactant gases extending through the power generation units, a coolant flow field for a coolant being formed between the power generation units, wherein a first reactant gas flow field for supplying the one of the reactant gases to one of electrode surfaces of the first electrolyte electrode assembly, and a first connection channel connecting the reactant gas passage and the first reactant gas flow field are formed on the first separator; a second reactant gas flow field for supplying the one of the reactant gases to one of electrode surfaces of the second electrolyte electrode assembly, and a second connection channel for connecting the reactant gas passage and the second reactant gas flow field are formed on the second separator; and at least portions of the first connection channel serving the first reactant gas flow field and the second connection channel serving the second reactant gas flow field are arranged in the same plane formed by mutually facing the first separator and the second separator, and are formed independently from each other at different positions in the same plane.