A fuel cell includes: a membrane electrode assembly of a flat plate shape including an electrolyte membrane and an electrode catalyst layer, the membrane electrode assembly having a first side intersecting a flow pathway of a reactive gas on a surface of the fuel cell and a second side differing from the first side; a frame member of a flat plate shape including an opening part for arrangement of the membrane electrode assembly, the opening part having a first frame side corresponding to the first side and a second frame side corresponding to the second side; and an adhesive member for bonding between an outer periphery of the membrane electrode assembly and an inner periphery of the frame member. The thickness of the adhesive member in an area from an inner peripheral edge at the second frame side toward a center of the frame member may be greater than the thickness of the adhesive member in an area from an inner peripheral edge at the first frame side toward the center of the frame member.

A fuel cell includes: a membrane electrode assembly of a flat plate shape including an electrolyte membrane and an electrode catalyst layer, the membrane electrode assembly having a first side intersecting a flow pathway of a reactive gas on a surface of the fuel cell and a second side differing from the first side; a frame member of a flat plate shape including an opening part for arrangement of the membrane electrode assembly, the opening part having a first frame side corresponding to the first side and a second frame side corresponding to the second side; and an adhesive member for bonding between an outer periphery of the membrane electrode assembly and an inner periphery of the frame member. The thickness of the adhesive member in an area from an inner peripheral edge at the second frame side toward a center of the frame member may be greater than the thickness of the adhesive member in an area from an inner peripheral edge at the first frame side toward the center of the frame member.

A resin frame member is produced by using a method of producing a resin frame member for a fuel cell. An inner peripheral end of the resin frame member includes an inclined surface formed over the entire periphery thereof. The inclined surface is inclined inward from one surface of the resin frame member toward the other surface of the resin frame member. The width of the inclined surface is gradually reduced from the center toward both ends of each side part of the inner peripheral end in a direction in which the side part of the inner peripheral end extends.

A resin frame member is produced by using a method of producing a resin frame member for a fuel cell. An inner peripheral end of the resin frame member includes an inclined surface formed over the entire periphery thereof. The inclined surface is inclined inward from one surface of the resin frame member toward the other surface of the resin frame member. The width of the inclined surface is gradually reduced from the center toward both ends of each side part of the inner peripheral end in a direction in which the side part of the inner peripheral end extends.

A fuel cell capable of reducing the stress exerted upon an electrolyte membrane resulting from the swelling and contraction of the electrolyte membrane. The fuel cell includes at least an MEGA with catalyst layers joined to the opposite sides of the electrolyte membrane, and a pair of separators disposed so as to sandwich the MEGA. The MEGA generates power with a hydrogen gas fed to one side of the MEGA and with an oxidant gas fed to the other side. Separators each have a plurality of projections formed on the side of the MEGA so as to form a gas channel through which the hydrogen gas or oxidant gas flows between the projections. The electrolyte membrane has a plurality of through-holes formed at positions facing the projections along the direction in which the projections extend.

A fuel cell capable of reducing the stress exerted upon an electrolyte membrane resulting from the swelling and contraction of the electrolyte membrane. The fuel cell includes at least an MEGA with catalyst layers joined to the opposite sides of the electrolyte membrane, and a pair of separators disposed so as to sandwich the MEGA. The MEGA generates power with a hydrogen gas fed to one side of the MEGA and with an oxidant gas fed to the other side. Separators each have a plurality of projections formed on the side of the MEGA so as to form a gas channel through which the hydrogen gas or oxidant gas flows between the projections. The electrolyte membrane has a plurality of through-holes formed at positions facing the projections along the direction in which the projections extend.

The invention relates to an electrochemical system unit comprising a plurality of electrochemical cells that are arranged in layers side by side, each cell comprising an anode plate, a cathode plate and a sealing element, wherein the sealing element is designed to seal a space between the anode and cathode plate. Said system also comprises at least two electrochemical cells of the electrochemical system unit having different manufacturing types of the sealing elements.

The invention relates to an electrochemical system unit comprising a plurality of electrochemical cells that are arranged in layers side by side, each cell comprising an anode plate, a cathode plate and a sealing element, wherein the sealing element is designed to seal a space between the anode and cathode plate. Said system also comprises at least two electrochemical cells of the electrochemical system unit having different manufacturing types of the sealing elements.

Herein disclosed is a method of making a fuel cell including forming an anode, a cathode, and an electrolyte using an additive manufacturing machine. The electrolyte is between the anode and the cathode. Preferably, electrical current flow is perpendicular to the electrolyte in the lateral direction when the fuel cell is in use. Preferably, the method comprises making an interconnect, a barrier layer, and a catalyst layer using the additive manufacturing machine.

The present invention relates to a fuel cell and a fuel cell stack comprising the same, and according to one aspect of the present invention, there is provided a fuel cell comprising a membrane-electrode assembly having a first surface and a second surface opposite to the first surface, wherein an anode electrode and a cathode electrode are each disposed on the first surface; an end plate disposed apart at a predetermined interval on the second surface; a first gas diffusion layer disposed on the anode electrode; a second gas diffusion layer disposed on the cathode electrode; a first separating plate disposed on the first gas diffusion layer and having a plurality of flow channels; and a second separating plate disposed on the second gas diffusion layer and having a plurality of flow channels.