Patent ID: 9065089
Filing Date: 2015-06-23
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising: a membrane electrode assembly including a first electrode, a second electrode, a resin frame member, and an electrolyte membrane provided between the first electrode and the second electrode in a stacking direction, the resin frame member being disposed on an outer periphery of the membrane electrode assembly; a first separator; and a second separator, the membrane electrode assembly being provided between the first separator and the second separator in the stacking direction, each of the first and second separators including a reactant gas channel through which a reactant gas is to be supplied along an electrode surface of the membrane electrode assembly and a reactant gas manifold through which the reactant gas is to flow in the stacking direction, the resin frame member including a first surface, a second surface, a first buffer portion, and a second buffer portion, the second surface being opposite to the first surface in the stacking direction, the first buffer portion being provided on the first surface of the resin frame member, the first buffer portion being located outside of a power generation region of the membrane electrode assembly and connected to the reactant gas channel and the reactant gas manifold of the first separator, the second buffer portion being provided on the second surface of the resin frame member, the second buffer portion being located outside of the power generation region and connected to the reactant gas channel and the reactant gas manifold of the second separator, the second buffer portion being independent from the first buffer portion, wherein the resin frame member includes a first protruding portion on which at least a portion of the first buffer portion is disposed and a second protruding portion on which at least a portion of the second buffer portion is disposed, the first buffer portion and the second buffer portion each extending beyond an edge of the resin frame member disposed adjacent to the power generation region, and wherein the resin frame member has an external shape such that the resin frame member is disposed inward from the reactant gas manifold.