Abstract: The present disclosure relates to an electrochemical cell arrangement for an electrolyzer. Also disclosed is a method of manufacturing an electrochemical cell arrangement. The electrochemical cell arrangement may comprise separator plates, gas diffusion layers and a membrane and additionally at least one separating layer, that may consist of a structurally rigid material like metal, which is coated with a plastic layer. The separating layer may have a recess and adjoining to the recess a metal ridge.

Abstract: The present disclosure relates to a separator plate for an electrolyser, comprising a metal layer which has a surface structuring in sections, and an elastomer coating designed as a sealing element and applied to the metal layer for sealing at least one region of the separator plate. The surface structuring comprises a plurality of channel-shaped depressions produced by laser surface treatment. The elastomer coating is arranged at least in some regions on the surface structuring. The present disclosure additionally relates to a method for manufacturing the separator plate.

Abstract: The present disclosure relates to a sealing arrangement for an electrochemical system, wherein the sealing arrangement is loadable transverse to a layer plane when installed in the electrochemical system, the sealing arrangement comprising a frame-shaped layer with a recess, wherein the recess is arranged to surround an electrochemically active region of the electrochemical system in the form of a frame, and wherein the recess has an inner edge, and an elastomeric sealing element, an inner edge region of which rests against the inner edge of the recess and an outer edge region of which projects into the recess, wherein the outer edge region comprises, at least on a first outer side, at least in sections, a support region for a component of the electrochemical system, which is lowered relative to an adjacent first region of the sealing element.

Abstract: The disclosure relates to a separator plate for an electrochemical system, comprising a first layer having a first outer side and a first inner side, and a second layer having a second outer side and a second inner side. A first channel-web structure having a plurality of channels and webs separating the channels is formed on the first outer side. The first channel-web structure forms a complementarily-shaped second channel-web structure on the first inner side. The second inner side faces the complementarily-shaped second channel-web structure and defines therewith a plurality of internal channels. A plurality of openings per internal channel each define a fluid connection between a respective internal channel and the first channel-web structure on the first outer side. The number of openings within a first half of a total channel length of a respective internal channel is less than within a second half of the total channel length.

Abstract: The present disclosure relates to a cell frame for an electrochemical system, comprising an outer region that defines at least one through-opening and a flow field, and a fluid guide structure disposed between the through-opening and the flow field, the fluid guide structure configured to guide a fluid from the through-opening to the flow field or vice versa, wherein the fluid guide structure has a metallic support element, which is connected to the outer region of the cell frame via at least one elastomeric connecting section.

Abstract: The present disclosure relates to a separator plate for an electrochemical system, in particular for an electrolyzer, wherein the separator plate has, at least on a first side, a plurality of channels through which flow can pass in a longitudinal direction of the channel and which are each separated from one another, at least in sections, by a web, wherein the channels each have a plurality of regions with reduced flow cross-section, wherein the number of regions with reduced flow cross-section within a first half of a total channel length of each channel is less than within a second half of the total channel length.

Abstract: The present disclosure relates to a separator plate for an electrolyzer or for another electrochemical system. The separator plate has a seal along an edge-region of a through-opening, with an outer surface which is topographical at least in sections. The present disclosure also relates to an electrochemical system.

Abstract: The present disclosure relates to a sealing arrangement, a bipolar plate, an arrangement for an electrochemical system, and an electrochemical system. The sealing arrangement comprises a frame-shaped layer, a first elastomeric sealing element and/or a second elastomeric sealing element, and an elastomeric fluid guide structure. The frame-shaped layer has a cut-out extending over an electrochemically active region, and a through-opening for passing a fluid. The first sealing element lies against an inner edge of the through-opening and projects laterally into the through-opening in order to seal the through-opening. The second elastomeric sealing element lies against an inner edge of the cut-out and projects laterally into the cut-out in order to seal the cut-out. The elastomeric fluid guide structure has a plurality of fluid passages for passing fluid from the through opening to the cut-out or vice versa.

Abstract: The present disclosure relates to a component of an electrochemical cell, in particular a separator plate or a cell frame of an electrochemical cell. Furthermore, the present disclosure also relates to a bipolar plate, an electrochemical cell and an electrochemical system such as a fuel cell, an electrolyzer or a redox flow battery. The component comprises a first metallic layer. Adjacent to at least one free edge of the first metallic layer, the first metallic layer is at least in sections folded over on itself one or more times thereby forming one or more folded layers, thereby increasing the thickness of the component by one or more than one layer thickness of the first metallic layer.

Abstract: A bipolar plate for an electrochemical system, such as an electrolyzer, having a separator plate and a support element firmly connected to the separator plate. The separator plate comprises a through-opening as an inlet or outlet for a fluid, a fluid guiding structure with a plurality of protrusions arranged at the through-opening for guiding the fluid between the plurality of protrusions, a bead arrangement which partially surrounds the through-opening, and a flow field with an electrochemically active region. The fluid guiding structure is arranged between the through-opening and the flow field such that the fluid can flow from the through-opening through the fluid guiding structure to the flow field or vice versa. The support element is configured to bridge the fluid guiding structure.

Abstract: A single-layer bipolar plate for an electrolyser. The single-layer bipolar plate comprises a flow field which is shaped substantially as an equilateral n-sided polygon. The flow field being predefined by an embossed channel structure which defines a plurality of channels for a reaction medium. Here, n may be an even natural number. The single-layer bipolar plate comprises at least four media apertures, wherein, on each of four different sides of the flow field, in each case at least one media aperture is arranged between the flow field and a respective outer edge of the bipolar plate.

Abstract: A separator plate for an electrolyser, to a method for producing same, and to a die pair for producing such a separator plate and for carrying out said method. A separator plate for an electrolyser, having a first metal layer, the separator plate comprising an active region having at least one multitude of flow channels for a reaction medium. The flow channels being embossed into the first metal layer and having a channel bottom and channel walls arranged on both sides of the channel bottom. Webs are arranged between adjacent channel walls of adjacent flow channels. At least some of the channel bottoms of the multitude of flow channels, the surface of the first metal layer opposite the channel bottom is at least partially substantially planar in a cross-section transverse to the direction of extension of the respective flow channel.

Abstract: A separator plate for an electrochemical system, an electrolyzer, a bipolar plate comprising such a separator plate, an electrolyzer comprising such a separator plate, and to tooling for producing such a separator plate. The separator plate comprising a flow area having a plurality of integrally formed support structures. An outer contour of the support structures in each case comprises: a first circular arc-shaped portion and a second circular arc-shaped portion, wherein a circular arc center point of the first circular arc-shaped portion and a circular arc center point of the second circular arc-shaped portion are arranged at a distance from each other on a longitudinal axis of the respective sup-port structure, and a joining portion which joins together the first circular arc-shaped portion and the second circular arc-shaped portion, wherein a width of the joining portion is smaller than a diameter of the first and/or second circular arc-shaped portion.

Abstract: A separator plate is disclosed for an electrochemical system. The plate comprises a multitude of mutually parallel and adjacent channels that are designed to guide a fluid at least along a region of the separator plate, wherein the channels each have a depth, a longitudinal extent, a channel base and two sidewalls, wherein the following conditions apply to at least one of the channels: the depth of the channel in a first region of the channel is essentially constant along the longitudinal extent, the channel base in the first region of the channel is essentially flat and the depth of the channel in a transition region of the channel that adjoins the first region decreases along the longitudinal extent, as a result of which a channel base continuation in the transition region is curved.