Abstract: An electrode material (1) for a fuel cell (50), comprising a planar body (11) made of an electrically conductive foam having an open and continuous porosity for at least one operating medium of the fuel cell (50), wherein the planar body (11) has a top side (12) and a bottom side (13), and wherein the thickness (14) of the material across all points (12a, 12a?) on the surface of the top side (12), measured in each case between a point (12a, 12a?) on the surface of the top side (12) and the point (13a, 13a?) opposite this point (12a, 12a?) on the surface of the bottom side (13), varies by at least 10%.

Abstract: invention relates to a distributing structure (10) for a fuel cell (1) in the form of a microporous layer, having: a multiplicity of particles (11), wherein the particles (11) are designed to provide the distributing structure (10) with mechanical stability and electrical conductivity, and wherein a multiplicity of pores (P) are formed between the particles (11) for the purposes of distributing reactants (H2, O2) through the distributing structure (10) and of discharging a product water (H2O), the invention providing, for this purpose, a multiplicity of fibres (12), which are distributed within the microporous layer such that the distributing structure (10) has a first diffusion coefficient (D1) in a first planar direction (x) in relation to the plane of extent (x, y) of the microporous layer, and that the distributing structure (10) has a second diffusion coefficient (D2) in a second planar direction (y) in relation to the plane of extent

Abstract: The invention relates to a bipolar plate (1) for a fuel cell, comprising a bipolar plate substrate (2) composed of stainless steel and comprising a coating (3), which is applied to the bipolar plate substrate (2), for increasing the corrosion resistance of the bipolar plate (1). According to the invention, the coating (3) is of single- or multi-layer design and has at least one layer (4) composed of a metal matrix (5) with non-passivating dispersoid particles (6) incorporated therein. The invention further relates to a fuel cell having at least one bipolar plate (1) according to the invention.

Abstract: A coating device for coating components, in particular for nickel-plating spark plug housings. The coating device includes: a housing having an outer anode that is designed to receive the component, an inner anode that can be introduced into a through-opening of the component, and a voltage-generating device, the voltage-generating device being designed to generate a first voltage between the outer anode and the component, as well as a second voltage between the inner anode and the component. The housing has an inlet and an outlet for introducing and discharging a process medium into or out of the housing.

Abstract: The invention relates to a gas diffusion layer (1) for a fuel cell (3), comprising a composite material (5) that contains electrically conducting particles (7), a binder and fibers (9), preferably carbon fibers, the particles (7) and the fibers (9) being present in the composite material (5) in the form of a mixture. The invention also relates to a fuel cell and to a method for producing the gas diffusion layer.

Abstract: A process for the winning of at least one of gold, silver, and at least one platinum metal includes introducing at least one starting material containing at least one of gold, silver, and at least one platinum metal into an aqueous solution containing at least one nitrile, and producing hydroxyl radicals in the aqueous solution.

Abstract: A housing for a spark plug. The housing includes a bore along the longitudinal axis X of the housing, as the result of which the housing has an outer side and an inner side, and an electroplated or chemically applied nickel-containing protective layer situated on at least one portion of the outer side of the housing and a sealing layer situated on the nickel-containing protective layer. The sealing layer contains silicon. A first intermediate layer is applied between the housing and the nickel-containing protective layer and/or a second intermediate layer is applied between the nickel-containing protective layer and the sealing layer and/or a cover layer is applied on the sealing layer. The sealing layer may be free of chromium.

Abstract: An electrode material (1) for a fuel cell (50), comprising a planar body (11) made of an electrically conductive foam having an open and continuous porosity for at least one operating medium of the fuel cell (50), wherein the planar body (11) has a top side (12) and a bottom side (13), and wherein the thickness (14) of the material across all points (12a, 12a?) on the surface of the top side (12), measured in each case between a point (12a, 12a?) on the surface of the top side (12) and the point (13a, 13a?) opposite this point (12a, 12a?) on the surface of the bottom side (13), varies by at least 10%.

Abstract: A housing for a spark plug. The housing includes a bore along the longitudinal axis X of the housing, as the result of which the housing has an outer side and an inner side, and an electroplated or chemically applied nickel-containing protective layer situated on at least one portion of the outer side of the housing and a sealing layer situated on the nickel-containing protective layer. The sealing layer contains silicon. A first intermediate layer is applied between the housing and the nickel-containing protective layer and/or a second intermediate layer is applied between the nickel-containing protective layer and the sealing layer and/or a cover layer is applied on the sealing layer. The sealing layer may be free of chromium.

Abstract: The invention relates to a method for producing a flow plate (10, 28) for a fuel cell (12), comprising a plurality of gas guide webs (14) and at least one electrically conductive and porous layer unit (16) arranged on the gas guide webs (14). It is proposed that a geometry and/or a structure of the layer unit (16) is produced during a material application onto the gas guide webs (14).

Abstract: An electrode that includes at least one current collector having a flat configuration and to which at least one arrester is attached, and at least one active material foil. The at least one active material foil is situated on a first surface of the current collector, and protrudes beyond the current collector on all sides along its edges to form an overhang of the active material foil past the outer boundary of the current collector on all sides.

Abstract: The invention relates to a method for producing a flow plate (10, 28) for a fuel cell (12), comprising a plurality of gas guide webs (14) and at least one electrically conductive and porous layer unit (16) arranged on the gas guide webs (14). It is proposed that a geometry and/or a structure of the layer unit (16) is produced during a material application onto the gas guide webs (14).

Abstract: An electrode that includes at least one current collector having a flat configuration and to which at least one arrester is attached, and at least one active material foil. The at least one active material foil is situated on a first surface of the current collector, and protrudes beyond the current collector on all sides along its edges to form an overhang of the active material foil past the outer boundary of the current collector on all sides.

Abstract: A method for producing an electrode having an electrically conductive base element on which there is arranged an active material comprising a silicon nanostructure includes introducing a precursor mixture comprising a silicon-containing material and a base matrix into a spinning unit, arranging an electrically conductive base body at a defined distance from a delivery device of the spinning unit, and delivering at least part of the precursor mixture from the delivery device to the base body. The method further includes applying an electrical voltage between at least part of the spinning unit and the base body so as to spin a silicon-containing nanostructure onto the base body, heat-treating the silicon-containing nanostructure, removing the heat-treated nanostructure from the base body, processing the removed nanostructure to a slurry, and applying the slurry to the base element to produce the electrode.

Abstract: An anode material for a galvanic element, in particular a lithium-ion cell. To improve the current density and thermal stability of galvanic elements, the anode material includes nanofibers made of a metal, a metal alloy, a carbon-metal oxide composite material, a carbon-metal alloy composite material, a conductive polymer, a polymer-metal composite material, a polymer-metal alloy composite material or a combination thereof. The nanofibers may be in the form a nanofiber netting, a nonwoven and/or a network and may be connected to a current conductor.

Abstract: A device for wet-chemical treatment of substrates includes: an accommodation device for a substrate and a process medium, the substrate having a treatment side in operative connection with the process medium; a fluid guidance element, having a specified surface texture, housed in the accommodation device, the specified surface texture being configured to provide a guidance of the process medium along the specified surface texture, the specified surface texture being positioned lying opposite and at a predetermined fixed recess at a distance from the treatment side of the substrate; and the process medium being moved in the intervening space between the specified surface texture of the fluid guidance element and the treatment side of the substrate.

Abstract: A device for wet-chemical treatment of substrates includes: an accommodation device for a substrate and a process medium, the substrate having a treatment side in operative connection with the process medium; a fluid guidance element, having a specified surface texture, housed in the accommodation device, the specified surface texture being configured to provide a guidance of the process medium along the specified surface texture, the specified surface texture being positioned lying opposite and at a predetermined fixed recess at a distance from the treatment side of the substrate; and the process medium being moved in the intervening space between the specified surface texture of the fluid guidance element and the treatment side of the substrate.

Abstract: A method for producing an electrode with an electrically conductive main body on which an active material having a silicon nano-structure is arranged includes introducing a precursor mixture having a silicon-containing material and a basic matrix into a spinning unit and arranging the main body at a defined distance from a discharge device of the spinning unit. At least part of the precursor mixture from the discharge device is discharged. An electrical voltage is applied between at least one part of the spinning unit and the main body for laminating a silicon-containing nano-structure on the main body. The silicon-containing nano-structure is then tempered. The method produces an electrode with an especially high capacity coupled with good cycle resistance. An energy store includes the electrode.

Abstract: A fuel cell, having a first electrode, a second electrode, and a membrane element, in which the membrane element is disposed between the first electrode and the second electrode. At least one of the electrodes has a flow field plate and at least one flow conduit, through which a reactant can be conducted, extends in at least one outer surface of the flow field plate. The flow field plate has at least one microreaction chamber, and the microreaction chamber is disposed in the outer surface and on the flow conduit. A catalyst is disposed on at least a part of the microreaction chamber in such a way that the catalyst has contact simultaneously with the membrane element and the inflowing reactant.

Abstract: An anode material for a galvanic element, in particular a lithium-ion cell. To improve the current density and thermal stability of galvanic elements, the anode material includes nanofibers made of a metal, a metal alloy, a carbon-metal oxide composite material, a carbon-metal alloy composite material, a conductive polymer, a polymer-metal composite material, a polymer-metal alloy composite material or a combination thereof. The nanofibers may be in the form a nanofiber netting, a nonwoven and/or a network and may be connected to a current conductor.