The present disclosure provides a separator-integrated gasket and a manufacturing method therefor, with which the likelihood of the gasket peeling away from the separator can be reduced while reducing the number of manufacturing steps. The separator-integrated gasket includes gaskets 210, 220 that are provided integrally with a separator 200 forming a fuel cell, wherein the separator 200 is formed from carbon to which a thermoplastic first resin material has been added, and the gaskets 210, 220 are formed from a thermoplastic second resin material that is compatible with the first resin material.

A fuel cell stack fuel plenum includes a base plate including an inlet hole and an outlet hole, a dielectric layer disposed on the base plate and including an inlet hole and an outlet hole, a cover plate disposed on the dielectric layer and including an inlet hole and an outlet hole, a seal plate disposed on the cover plate and including an inlet hole and an outlet hole, and a manifold plate disposed on the seal plate. The manifold plate includes a bottom inlet hole and a bottom outlet hole formed in a bottom surface of the manifold plate, top outlet holes and top inlet holes formed in opposing sides of a top surface of the manifold plate, outlet channels fluidly connecting the top outlet holes to the bottom inlet hole, and inlet channels fluidly connecting the top inlet holes to the bottom outlet hole.

A fuel cell stack fuel plenum includes a base plate including an inlet hole and an outlet hole, a dielectric layer disposed on the base plate and including an inlet hole and an outlet hole, a cover plate disposed on the dielectric layer and including an inlet hole and an outlet hole, a seal plate disposed on the cover plate and including an inlet hole and an outlet hole, and a manifold plate disposed on the seal plate. The manifold plate includes a bottom inlet hole and a bottom outlet hole formed in a bottom surface of the manifold plate, top outlet holes and top inlet holes formed in opposing sides of a top surface of the manifold plate, outlet channels fluidly connecting the top outlet holes to the bottom inlet hole, and inlet channels fluidly connecting the top inlet holes to the bottom outlet hole.

In order to create an electrochemical device, comprising a plurality of electrochemical units, which succeed one another along a stack direction, wherein each electrochemical unit comprises a bipolar plate and an electrically insulating seal, and a clamping device for clamping the electrochemical units along the stack direction, in which electrochemical device the risk of a short circuit between adjacent bipolar plates is reduced without the expenditure for the production of the electrochemical device being excessively increased, it is proposed that at least one seal of at least one electrochemical unit in the pressed state protrudes laterally beyond a contour of the bipolar plate of the electrochemical unit in a direction of protrusion directed perpendicularly to the stack direction.

In order to create an electrochemical device, comprising a plurality of electrochemical units, which succeed one another along a stack direction, wherein each electrochemical unit comprises a bipolar plate and an electrically insulating seal, and a clamping device for clamping the electrochemical units along the stack direction, in which electrochemical device the risk of a short circuit between adjacent bipolar plates is reduced without the expenditure for the production of the electrochemical device being excessively increased, it is proposed that at least one seal of at least one electrochemical unit in the pressed state protrudes laterally beyond a contour of the bipolar plate of the electrochemical unit in a direction of protrusion directed perpendicularly to the stack direction.

Disclosed are fuel cells including a membrane electrode assembly (MEA), a separator stacked on a surface of the membrane electrode assembly, a beading portion protruding from a first surface of the separator that faces the membrane electrode assembly, and a sealing member disposed between the membrane electrode assembly and the beading portion and being configured to seal a portion between the membrane electrode assembly and the separator, thereby ensuring rigidity and improving safety and reliability of the fuel cell.

Disclosed are fuel cells including a membrane electrode assembly (MEA), a separator stacked on a surface of the membrane electrode assembly, a beading portion protruding from a first surface of the separator that faces the membrane electrode assembly, and a sealing member disposed between the membrane electrode assembly and the beading portion and being configured to seal a portion between the membrane electrode assembly and the separator, thereby ensuring rigidity and improving safety and reliability of the fuel cell.

A fuel cell stack comprising stacked unit cells, each comprising a membrane electrode assembly comprising an electrolyte membrane and a pair of electrodes disposed on both surfaces thereof, two separators sandwiching the membrane electrode assembly, and a frame-shaped resin sheet disposed between the two separators and around the membrane electrode assembly to attach the separators, wherein the resin sheet comprises a first protrusion protruding in the planar direction of the resin sheet and occupying a part of a first region occupied by a reaction gas inlet manifold, and a second protrusion protruding in the planar direction of the resin sheet and occupying a part of a second region occupied by a reaction gas outlet manifold; and wherein the resin sheet comprises at least one water discharge hole at a predetermined position of at least one protrusion selected from the group consisting of the first protrusion and the second protrusion.

A sheet member includes a pair of main surfaces opposing each other. A maximum thickness that is a maximum interval between the pair of main surfaces is 40 μm or more and 450 μm or less. The sheet member has a region in which a plurality of coherent pattern lines appear when viewed from a direction facing the pair of main surfaces, the plurality of coherent pattern lines being arranged at intervals in a direction in which one edge portion and another edge portion opposing the one edge portion oppose each other, and a pair in the plurality of coherent pattern lines adjacent to each other do not intersect.

A fuel cell comprising a membrane electrode gas diffusion layer assembly, a resin frame, a first separator and a second separator, wherein the resin frame comprises an opening in which the membrane electrode gas diffusion layer assembly can be disposed, and a skeleton surrounding the opening, and wherein the second separator comprises a convexity at four corners of a region which is a part abutting the resin frame and which faces an inner peripheral edge of the skeleton, and the second separator abuts the resin frame in a state that the convexities are engaged with the resin frame, or wherein the second separator comprises an adhesive at the four corners of the region which is the part abutting the resin frame and which faces the inner peripheral edge of the skeleton, and the second separator is attached to the resin frame via the adhesive.