Patent ID: 8735015
Filing Date: 2014-05-27
Classification: H01M,Y02E

Abstract:
1. A fuel cell including a plurality of power generation cells each formed by stacking an electrolyte electrode assembly and a separator together in a stacking direction, the electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between the electrodes, a reactant gas flow field for supplying a fuel gas or an oxygen-containing gas as a reactant gas along one of the electrodes being formed on one surface of the separator facing the one electrode, a reactant gas supply passage extending through at least one corner of the power generation cell in the stacking direction, the reactant gas flowing through the reactant gas supply passage into the reactant gas flow field, wherein an inlet buffer is provided upstream of the reactant gas flow field, the reactant gas supply passage and the inlet buffer are connected by a plurality of inlet connection grooves provided on a region of the separator located between the reactant gas supply passage and a part of the inlet buffer in the width direction, the plurality of inlet connection grooves are parallel to each other, and in a surface of the separator, the inlet connection grooves are angled toward the center of the reactant gas flow field as compared to a line drawn perpendicular to a wall surface of the reactant gas supply passage that is adjacent to the inlet buffer.