The invention relates to a method for producing a membrane electrode assembly (10) for a fuel cell, comprising the following steps in the order given: provide two gas diffusion layers (13) that each have a catalytically coated surface; apply an ionomer dispersion (15a) onto the coated surface of at least one of the gas diffusion electrodes (13), arrange the gas diffusion layers (13) on each other such that the coated surfaces face each other, and a layer stack (18) comprising a gas diffusion layer (13)-catalytic coating (14)-ionomer coating (15)-catalytic coating (14)-gas diffusion layer (13) arises, and arrange a peripheral seal (17) around the layer stack (18), wherein the seal (17) has a height that at least corresponds to the height of the layer stack (18).

Furthermore, the invention relates to a membrane electrode assembly (10) that is or can be produced by means of the method according to the invention.

A redox flow battery includes a cell frame having a frame body in which a sealing groove is formed and a sealing member disposed in the sealing groove. The redox flow battery includes an adhesive that fixes the sealing member to the sealing groove, and a type A durometer hardness of the adhesive after curing is 100 or less. Preferably, the type A durometer hardness of the adhesive after curing is less than or equal to a type A durometer hardness of the sealing member.

A gas distribution assembly comprises a first plate and a second plate parallel with each other, the first plate comprising gas communication orifices. A sealing interface device includes seals disposed around communication orifices and a strut disposed in a coupling plane between the first and second plates. The strut and the seals form a sealing interface having two planes of symmetry perpendicular with each other and perpendicular to the coupling plane, the thickness of the seals before coupling under pressure of the first and second plates being greater than the thickness of the strut. Use for a high-temperature solid oxide electrolyser or fuel cell.

An electrochemical system is described having an end plate, a stack cover plate adjacent to the end plate and at least one metallic electrical conductor. The stack cover plate has an electrically conductive contacting plate adjacent to the end plate and an electrically conductive separator plate half facing away from the end plate. The contacting plate and the separator plate half are connected to each other electrically and media-tight. The metallic electrical conductor extends to an outside of the electrochemical system. The metallic electrical conductor and the contacting plate are in one piece or the metallic electrical conductor contacts the contacting plate directly. The contacting plate and the separator plate half are bonded to each other.

Systems and methods for shunt current and mechanical loss mitigation in electrochemical systems include a conduit providing at least a portion of an electrically conductive pathway between the first and second electrochemical cells, wherein the conduit includes at least one shunt current suppression device configured as a loop, and/or a connector assembly for maintaining first and second connecting portions in adjacent positioning.

Proposed is a fuel cell membrane humidifier which includes a main housing, a hollow fiber membrane cartridge including a seal mount and a fixing layer, an inlet housing including a coupling portion, a seal ground portion, and a main chamber, an outlet housing including a coupling portion, a gas inflow port, a second chamber, and a cartridge insertion portion, a variable seal including a body portion, and a rib elastically transformed with respect to the body portion and being in close contact with the seal ground portion, and a back pressure passage communicating between the main chamber and the seal ground portion, wherein the ground pressure of the rib on the seal ground portion is formed to increase in correspondence to the pressure of dry air of the main chamber introduced through the back pressure passage when the dry air is supplied.

A frame gasket may include a flat base, which is positioned along the edge of stack constitutional parts and which includes a first elastic base and reinforced fibers mixed therein to ensure sealing of a fuel cell stack, and first projection units, which project over the base and which include a second elastic base.

The purpose of the present invention is to improve the handling and usability of rubber only-type gaskets. To achieve said purpose, a gasket molding is obtained by combining a rubber only-type gasket body with a film carrier obtained from a resin film that holds the gasket body in an unbonded state. The gasket molding is characterized in that: in addition to a gasket-holding section for holding the gasket body, the film carrier has temporary tacking sections that are surface-treated to temporarily tack the gasket body to said film carrier; the gasket body has temporary tack-receiving sections that are temporarily tacked to the temporary tacking sections; and the temporary tacking sections and temporary tack-receiving sections are removed from the film carrier and the gasket body when the film carrier and gasket body are punched into the product shapes.

The purpose of this invention is to make it easy to handle all-rubber gaskets. To achieve this purpose, a gasket is characterized in that a gasket body of only rubber is combined with a carrier film that is made from a resin film to hold the gasket body in a non-adhesive state. A three-dimensional portion having a shape that is deformed along the external shape of the gasket body is provided at a position where the gasket body and a plane of the carrier film overlap, and a portion of the gasket body is contained in the three-dimensional section. The gasket body is used as a gasket for fuel cells incorporated into a fuel cell stack.

The compact fuel cell which can efficiently perform heating and can be repeatedly used includes a solid electrolyte, an anode that is formed on one surface of the solid electrolyte, a cathode that is formed on another surface of the solid electrolyte, an anode fuel material, a heating portion for heating and maintaining the solid electrolyte and the anode fuel material at a temperature equal to or higher than a predetermined level, and a sealing portion that is installed in the solid electrolyte, forms a sealed space sealing the anode and the anode fuel material together with the solid electrolyte and the heating portion, and can repeatedly open and close, in which a helium leak rate of the sealed space is maintained at 110.sup.2 Pa.Math.m.sup.3/sec or a lower rate.