296 results about "Galvanic cell" patented technology

An actively antimicrobial surface for a substrate and for use in a biologically dynamic environment, such as for treating and preventing microbial infections, including a film consisting of at least an antimicrobial element and another electrochemically nobler element and which forms multitudinous galvanic cells with electrolyte-containing biological fluids, such as body fluids from wounds, etc., for releasing the antimicrobial element at the surface.

A process for production of an actively antimicrobial surface for a substrate and for use in a biologically dynamic environment, such as for treating and preventing microbial infections, including a film consisting of at least an antimicrobial element and another electrochemically nobler element and which forms multitudinous galvanic cells with electrolyte-containing biological fluids, such as body fluids from wounds, etc., for releasing the antimicrobial element at the surface.

A durable highly reflective silver mirror characterized by high reflectance in a broad spectral range of about 300 nm in the UV to the far infrared (˜10000 nm), as well as exceptional environmental durability. A high absorptivity metal underlayer is used which prevents the formation of a galvanic cell with a silver layer while increasing the reflectance of the silver layer. Environmentally durable overcoat layers are provided to enhance mechanical and chemical durability and protect the silver layer from corrosion and tarnishing, for use in a wide variety of surroundings or climates, including harsh or extreme environments.

A galvanic cell structure is provided. The galvanic cell structure includes an outer cylinder featuring air inlets, a cathode, an anode, a membrane separating the cathode from the anode, and an inner cylinder featuring fluid inlets that may provide a volume for storing and/or transferring fluid for use in the galvanic cell.

The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom. The present disclosure additionally or alternatively relates to such an on-demand hydrogen gas generation device that comprises a gas management system designed to maximize the release or evolution of hydrogen gas, and in particular dry hydrogen gas, therefrom once it has been formed, thus maximizing hydrogen gas output. The present disclosure is still further directed to a fuel cell comprising such an on-demand hydrogen gas generation device, and in particular a fuel cell designed for small-scale applications.

A galvanic cell having a cathode, an anode, and an electrolyte. The cathode and anode each have vesicles, an electroactive species encapsulated into the vesicles, a conducting substrate, and functionalized tethers immobilizing the vesicles to the substrates. The electrolyte is in contact with both conducting substrates. At least some of the vesicles contain benzoquinone and/or hydroquinone.

Bioelectric implants are provided in three distinct embodiments, namely a bone/tissue anchor, a suture construction, and a plate. The bioelectric implants function in dual capacities as both fixation devices, and as galvanic cells for the production of electrical energy used for therapeutic purposes in tissue regeneration and healing. The bioelectric anchor may take the general form of a screw or pin having a hollow interior or cavity that extends through the body of the anchor. A coating can be applied to the cavity to form the anode portion of the galvanic cell. The outer surface of the anchor serves as a cathode. Bodily fluids and tissue act as an electrolyte to facilitate the chemical reactions necessary for the galvanic cell. For the suture construction, one or more strands of material are the cathode, and one or more strands of peripheral surrounding material act as the anode. Bodily fluids/tissue in contact with the suture act as an electrolyte. The bioelectric plate can be used in combination with the bioelectric anchor to supplement delivery of electrical energy. The plate has anode and cathode portions also making it a source of electrical energy.

A method for producing a cathode material for a cathode of a galvanic cell, such as a lithium or natrium sulfur cell. In order to improve the electric and ionic conductivity, the sulfur accessibility and utilization, elemental sulfur, at least one electrically conductive component and a solvent or a solvent mixture are mixed in method step a), the elemental sulfur being completely dissolved in the solvent or in the solvent mixture, and the solvent or solvent mixture is removed in a method step b).

A galvanic cell with a closed structure is provided. The cell may include a galvanic cell unit having a metal hydride anode, separators positioned on opposite sides of the metal hydride anode, oxygen electrodes positioned adjacent to the separators on sides opposite to the metal hydride anode, insulator plates positioned in contact with the oxygen electrodes, an electrolyte in contact with any one or more of the metal hydride anode, oxygen electrodes, insulator plates, or separators, and a pressure vessel enclosing the galvanic cell unit.

A galvanic cell utilizing a gas scrubber is provided. The galvanic cell may include a galvanic cell unit and a gas scrubber comprising an active material layer, a resistance coil in contact with the active material layer, a first shutter positioned between the active material layer and ambient air, a second shutter may be positioned between the galvanic cell unit and the active material layer.

The embodiments of the present invention relate to a membrane assembly for use in a galvanic cell, the membrane assembly comprising an anionic layer in contact with an electrolyte base, a cationic layer in contact with an electrolyte acid and an intermediate layer separating the anionic layer and cationic layer.

A battery having a housing assembled from multiple parts, of which one housing part is implemented like a vessel having an initially open front side and the other housing part is a closure part, which closes the vessel-like housing part on its initially open front side, and having at least one first and at least one second electrode, each of which is formed by a planar material, of which the first electrode is electrically connected to an electrically conductive housing part of the battery, while the second electrode is electrically connected to an electrically conductive contact, which is electrically insulated from the remaining housing, the battery comprising a molded part which is provided with at least one first recess for receiving and positioning at least one section of the first electrode or the first electrodes at a time.

The present disclosure generally relates to an on-demand hydrogen gas generation device, suitable for use in a fuel cell, which utilizes water electrolysis, and more particularly galvanic cell corrosion, and/or a chemical hydride reaction, to produce hydrogen gas. The present disclosure additionally relates to such a device that comprises a switching mechanism that has an electrical current passing therethrough and that repeatedly and reversibly moves between a first position and a second position when exposed to pressure differential resulting from hydrogen gas generation, in order to (1) alter the rate at which hydrogen gas is generated, such that hydrogen gas is generated on an as-needed basis for a fuel cell connected thereto, and/or (2) ensure a substantially constant flow of hydrogen gas is released therefrom. The present disclosure additionally or alternatively relates to such an on-demand hydrogen gas generation device that comprises a gas management system designed to maximize the release or evolution of hydrogen gas, and in particular dry hydrogen gas, therefrom once it has been formed, thus maximizing hydrogen gas output. The present disclosure is still further directed to a fuel cell comprising such an on-demand hydrogen gas generation device, and in particular a fuel cell designed for small-scale applications.

A battery (Ia.. Ie) having a housing (2) and a plurality of galvanic cells (3) arranged in the housing (2) is provided. In addition, a fan (5a..5c) is arranged in the housing (2) to create a fluid flow circulating inside the housing (2). According to the invention, a heat exchanger (6a..6e) having a forward flow (7) and a return flow (8) for a heat transfer medium, which lead out of the housing (2) is arranged in the flow path (A) of the fluid flow.

A nonwoven fabric, in particular for use as a separator in batteries or galvanic cells, having functional fibers made of at least one fibrous material which intrinsically contains at least one substance that is chemically active or activatable in an alkaline medium. The substance is incorporated surface-actively exclusively in volumetric regions of the functional fibers whose surface areas are able to be acted upon by the medium. A fiber is made from the mentioned fibrous material. A galvanic cell contains this nonwoven fabric as a separator.

A battery array is provided for connection to an electric load as well as to a battery charger. A process for controlling the state of charge of a battery array is also provided. The energy needed to supply an electric device not connected to the electric network is taken from a battery, which is composed of a plurality of galvanic cells connected in series. The energy that can be supplied by such a series-connected array, a so-called battery line, is limited for safety reasons. Moreover, it is difficult to determine the state of charge, because the calibration points necessary for the determination of the state of charge, namely, the two states of charge “full” and “empty,” are reached by such a series-connected array only rarely if ever. A battery array that has a plurality of series-connected arrays connected in parallel, whose states of charge are estimated separately is provided. The corresponding process controls the state of charge of the battery array, in which the individual series-connected arrays are charged and discharged in a preset sequence.

An apparatus and method for transporting used, damaged, or defective galvanic cells while impeding and combating safety-critical states of the galvanic cells, in particular lithium-ion-based cells and/or lithium-ion polymer cells, includes an outer container, which defines a space, an inner container being arranged in the space. The inner container has spacers in order to maintain a distance from the bottom and inner faces of the outer container, an accommodating container for accommodating at least on galvanic cell being arranged in the inner container, free intermediate spaces being filled with a fire protection agent composed of inert, non-conductive, non-flammable, absorbent hollow glass granular material.