A separator plate (1) for media guiding in a fuel cell, with at least one through-opening (2, 3, 4, 5, 6, 7) for supplying and at least one through-opening (2, 3, 4, 5, 6, 7) for discharging a medium, with a channel structure (12) for uniformly guiding the medium, as well as with distribution regions (9) which connect the through-openings (2, 3, 4, 5, 6, 7) with the channel structure (12). At least one of the distribution regions (9) surrounds at least one of the through-openings (2, 3, 4, 5, 6, 7) associated with it around the entire perimeter.

A separator plate (1) for media guiding in a fuel cell, with at least one through-opening (2, 3, 4, 5, 6, 7) for supplying and at least one through-opening (2, 3, 4, 5, 6, 7) for discharging a medium, with a channel structure (12) for uniformly guiding the medium, as well as with distribution regions (9) which connect the through-openings (2, 3, 4, 5, 6, 7) with the channel structure (12). At least one of the distribution regions (9) surrounds at least one of the through-openings (2, 3, 4, 5, 6, 7) associated with it around the entire perimeter.

A porous body with a framework having an integrally continuous, three-dimensional network structure, the framework comprising an outer shell and a core including one or both of a hollow or a conductive material, the outer shell including nickel and cobalt, the cobalt having a ratio in mass of 0.2 or more and 0.4 or less or 0.6 or more and 0.8 or less relative to the total mass of the nickel and the cobalt.

A porous body with a framework having an integrally continuous, three-dimensional network structure, the framework comprising an outer shell and a core including one or both of a hollow or a conductive material, the outer shell including nickel and cobalt, the cobalt having a ratio in mass of 0.2 or more and 0.4 or less or 0.6 or more and 0.8 or less relative to the total mass of the nickel and the cobalt.

A monolithic electrode structure for use in electrochemical flow cells is presented. The monolithic electrode structure includes a dense region with embedded flow channels that provides functionality of a flow field layer and a porous region that provides combined functionalities of gas diffusion and catalyst layers. The monolithic electrode structure is additively fabricated to include regions of different porosities/densities. A material of the monolithic electrode structure is a pure metal that is a catalyst for a targeted electrochemical reaction, or an alloy that contains such pure metal. Porosity of the porous region is adjusted to allow flow of liquid, such as water, towards or away from an active surface of the electrode. According to one aspect, porosity is adjusted by adjusting the pore size that make the porous region. According to another aspect, the dense region contains cooling channels for cooling of the electrode.

The disclosure relates to a brazing method for joining substrates, in particular where one of the substrates is difficult to wet with molten braze material. The method includes formation of a porous metal layer on a first substrate to assist wetting of the first substrate with a molten braze metal, which in turn permits joining of the first substrate with a second substrate via a braze metal later in an assembled brazed joint. Ceramic substrates can be particularly difficult to wet with molten braze metals, and the disclosed method can be used to join a ceramic substrate to another substrate. The brazed joint can be incorporated into a solid-oxide fuel cell, for example as a stack component thereof, in particular when the first substrate is a ceramic substrate and the joined substrate is a metallic substrate.

The disclosure relates to a brazing method for joining substrates, in particular where one of the substrates is difficult to wet with molten braze material. The method includes formation of a porous metal layer on a first substrate to assist wetting of the first substrate with a molten braze metal, which in turn permits joining of the first substrate with a second substrate via a braze metal later in an assembled brazed joint. Ceramic substrates can be particularly difficult to wet with molten braze metals, and the disclosed method can be used to join a ceramic substrate to another substrate. The brazed joint can be incorporated into a solid-oxide fuel cell, for example as a stack component thereof, in particular when the first substrate is a ceramic substrate and the joined substrate is a metallic substrate.

A fuel cell may include a first fuel cell bipolar plate defining an air layer, a second fuel cell bipolar plate defining a hydrogen layer, and a coolant layer defined by the air layer and the hydrogen layer. The coolant layer includes a plurality of coolant microchannels that facilitate flow of a coolant. A permeable support layer is arranged between the air layer and the hydrogen layer to define a gap therebetween to prevent flow blockage of the coolant microchannels while facilitating coolant flow therethrough.

A fuel cell may include a first fuel cell bipolar plate defining an air layer, a second fuel cell bipolar plate defining a hydrogen layer, and a coolant layer defined by the air layer and the hydrogen layer. The coolant layer includes a plurality of coolant microchannels that facilitate flow of a coolant. A permeable support layer is arranged between the air layer and the hydrogen layer to define a gap therebetween to prevent flow blockage of the coolant microchannels while facilitating coolant flow therethrough.

A fuel cell may include a first fuel cell bipolar plate defining an air layer, a second fuel cell bipolar plate defining a hydrogen layer, and a coolant layer defined by the air layer and the hydrogen layer. A permeable support infill structure, composed of sintered thermally conductive powder particles, is arranged at the cooling layer to prevent flow blockage at the coolant layer, define a thermally conductive path between the air layer and the hydrogen layer, and facilitate coolant flow through the permeable support infill structure.