Abstract: The invention relates to a method for producing an electrically conductive conductor strand (1) which comprises at least one carbon conductor (3), having the steps of: a) producing or providing a conductor strand (1) as an intermediate product comprising at least one carbon conductor (3), which comprises in particular graphite, pyrolytic graphite, graphene, graphin, and/or carbon nanotubes, b) introducing the conductor strand (1) and one or more intercalating substances (2), in particular either one or more metal halides or one or more organoalkali metals, into a gas phase or liquid phase of a reactor volume (5), the intercalating substance being suitable for intercalation into the material of the at least one carbon conductor (3) of the conductor strand (1), and c) carrying out a thermal treatment of the conductor strand (1), in which the reactor volume (5) is brought to a process temperature to initiate an intercalation (4), in which atoms or molecules of the intercalating substance (2) are embedded in t

Abstract: A method for producing a laminated core (1) of an electrical machine, comprising the steps of a) providing foil laminations (4) each comprising a carrier foil (6) made of aluminum and a natural or produced aluminum oxide layer (7) and each being coated with a first foil coating (10) made of a first powder mixture on at least one side (11, 12) at flux barrier surfaces (8), wherein the first powder mixture comprises an austenite stabilizer, aluminum oxide, and an adhesive agent, b) providing sheet metal laminations (5) of the laminated core (1), c) alternately stacking sheet metal laminations (5) and foil laminations (4), wherein the foil laminations (4) are oriented relative to the sheet metal laminations (5) such that the flux barrier surfaces (8) of the respective foil lamination (4) come into direct contact with the respective sheet metal lamination (5) at specified flux barrier locations (9) of the respective sheet metal lamination (5); d) heating the stack of sheet metal laminations (5) and foil laminatio

Abstract: In a method for producing a laminated core (1) of an electric machine, sheet metal laminations (4, 5), which are based on an iron material, are alloyed by means of heat treatment with an alloy material (16) comprising silicon. Before the heat treatment, aluminum-based foil laminations (6, 7) which comprise foil aluminum oxide layers (8, 9) and are each at least partially coated with the alloy material, are arranged between the sheet metal laminations (4, 5).

Abstract: The present invention relates to a method for producing an electrical carbon conductor from carbon structural forms, which are in particular allotropic modifications of the carbon, in particular graphite, pyrolytic graphite, graphene and/or carbon nanotubes, and precursor compounds of graphene, such as graphene oxide, for example, which, in order to increase the electrical conductivity of the electrical carbon conductor, are doped with an additive for doping the carbon structural forms, in particular aluminum fluoride and/or aluminum chlorofluoride and/or perfluorinated polymeric sulfonic acid, characterized by the steps: producing a liquid dispersion from undoped carbon structural forms and a solvent, adding the additive to the dispersion and mixing the dispersion, producing a conductor strand in fiber or film form to form the carbon conductor, in particular by wet-spinning the dispersion or by depositing the dispersion on a carrier material, and by removing the dispersion fluid from the conductor strand as

Abstract: The invention relates to a method for producing graphene fibres, comprising the following steps: a. providing single- or multi-layer graphene or graphene oxide platelets based on graphene or graphene oxide; b applying a transition metal or a transition metal oxide to the graphene or graphene oxide platelets by means of a deposition method; c. spinning, in particular wet-spinning or dry-spinning, a graphene fibre or graphene oxide fibre by injecting a spinning solution, in which the graphene or graphene oxide platelets obtained in step b) are dispersed; d.

Abstract: The invention relates to a method for producing an electrically conductive conductor strand (1) which comprises at least one carbon conductor (3), having the steps of: a) producing or providing a conductor strand (1) as an intermediate product comprising at least one carbon conductor (3), which comprises in particular graphite, pyrolytic graphite, graphene, graphin, and/or carbon nanotubes, b) introducing the conductor strand (1) and one or more intercalating substances (2), in particular either one or more metal halides or one or more organoalkali metals, into a gas phase or liquid phase of a reactor volume (5), the intercalating substance being suitable for intercalation into the material of the at least one carbon conductor (3) of the conductor strand (1), and c) carrying out a thermal treatment of the conductor strand (1), in which the reactor volume (5) is brought to a process temperature to initiate an intercalation (4), in which atoms or molecules of the intercalating substance (2) are embedded in t

Abstract: The present invention relates to an electrical conductor (1) having an electrically conductive material (2) comprising graphene and/or carbon nanotubes and a joint (3, 4), wherein a metal coating (6) is provided on the electrically conductive material (2) of the electrical conductor (1) at the joint (3, 4) for integrally joining the electrical conductor (1) to a metal conductor element, the metal coating (6) being in direct contact with the electrically conductive material (2), characterized in that the metal coating (6) of the joint (3, 4) comprises a metal that forms carbides in a boundary layer of the coating (6) by reaction of the metal of the coating (6) with the carbon of the electrically conductive material (2).

Abstract: The present invention relates to an electrical conductor (1) having an electrically conductive material (2) comprising graphene and/or carbon nanotubes and a joint (3, 4), wherein a metal coating (6) is provided on the electrically conductive material (2) of the electrical conductor (1) at the joint (3, 4) for integrally joining the electrical conductor (1) to a metal conductor element, the metal coating (6) being in direct contact with the electrically conductive material (2), characterized in that the metal coating (6) of the joint (3, 4) comprises a metal that forms carbides in a boundary layer of the coating (6) by reaction of the metal of the coating (6) with the carbon of the electrically conductive material (2).

Abstract: The invention relates to a method for producing graphene fibres, comprising the following steps: a. providing single- or multi-layer graphene or graphene oxide platelets based on graphene or graphene oxide; b applying a transition metal or a transition metal oxide to the graphene or graphene oxide platelets by means of a deposition method; c. spinning, in particular wet-spinning or dry-spinning, a graphene fibre or graphene oxide fibre by injecting a spinning solution, in which the graphene or graphene oxide platelets obtained in step b) are dispersed; d.

Abstract: Stators (2) having teeth (4) and electrical windings (5) provided on the teeth (4), wherein the electrical windings (5) comprise graphene and/or carbon nanotubes, are already known. The electrical winding (5) of the stator (2) is produced in a winding process. The electrical winding (5) in the component of an electric machine according to the invention can be produced more easily, in particular further electrical phases can be built into the electrical winding (5) in a simpler and reproducible manner. According to the invention, the electrical windings (5) are each formed as a tubular fabric which encloses the tooth (4) to which it is assigned.

Abstract: The invention relates to a heat exchanger (1) having a main part (2), which is thermally coupled to carbon nanostructure-based fibers (CNB), in particular carbon nanotubes (CNT). At least one gas channel (3) is provided and is formed by the main part (2) to at least some, the carbon nanostructure-based fibers (CNB) at least partially extending through the gas channel (3).

Abstract: A battery cell, specifically a lithium-ion battery cell, having a prismatic battery cell housing (6), in which the electrochemical components of the battery cell (2) are accommodated, and further comprising a thermal equalization element (8), which is configured for the enhancement of thermal conductivity, which is arranged on a smallest lateral surface (64) of the battery cell housing (6), such that a region (9) of the smallest lateral surface (64) which is not covered by the thermal equalization element (8) at least partially encloses said thermal equalization element (8).

Abstract: Electromagnetically excitable coils which are each formed by winding an electrical conductor which comprises graphene and/or carbon nanotubes are already known. According to the invention, the coil can be produced with a conductor strip in such a way that a winding space which is available to the coil is utilized in an optimum manner. According to the invention, provision is made for the at least one electrical conductor (2) to be designed as a conductor strip and to be wound in such a way that its conductor cross section is folded and/or angled over a certain length.

Abstract: Stators (2) having teeth (4) and electrical windings (5) provided on the teeth (4), wherein the electrical windings (5) comprise graphene and/or carbon nanotubes, are already known. The electrical winding (5) of the stator (2) is produced in a winding process. The electrical winding (5) in the component of an electric machine according to the invention can be produced more easily, in particular further electrical phases can be built into the electrical winding (5) in a simpler and reproducible manner. According to the invention, the electrical windings (5) are each formed as a tubular fabric which encloses the tooth (4) to which it is assigned.

Abstract: Yarns for electrical conduction that comprise a composite of fibres composed of carbon nanotubes and/or of a multiplicity of graphene layers and have a specific porosity are already known. The yarns have an electrical insulation layer, which is produced by application of a polymer coating. The electrical insulation layer has to adhere to the yarn sufficiently well for the insulation not to detach even in the event of mechanical stress, for example deflection with a small bending radius. Furthermore, the electrical insulation layer should be as thin as possible in order to achieve a low thermal resistance. Additionally, the electrical insulation layer has to be elastic enough to be able to cope with any geometric changes in the non-rigid yarn without detaching. In the electric conductor according to the invention, the electrical insulation is improved.

Abstract: A battery cell, specifically a lithium-ion battery cell, having a prismatic battery cell housing (6), in which the electrochemical components of the battery cell (2) are accommodated, and further comprising a thermal equalization element (8), which is configured for the enhancement of thermal conductivity, which is arranged on a smallest lateral surface (64) of the battery cell housing (6), such that a region (9) of the smallest lateral surface (64) which is not covered by the thermal equalization element (8) at least partially encloses said thermal equalization element (8).

Abstract: The invention relates to an electric solenoid (10) comprising at least one solenoid body (11) and a magnet wire (25; 25a) surrounding the solenoid body (11) in the form of at least one winding on a peripheral surface (16) of said solenoid body (11), the magnet wire (25; 25a) consisting of an electrically conductive wire core (23) and an insulation layer (26) which at least partially surrounds the wire core (23). According to the invention, the wire core (23) consists of aluminium (21) and graphene (22) which is in electrically conductive contact with the aluminium (21).

Abstract: A method for producing a thermoelectric module with a plurality of thermoelectric leg elements, which are electrically connected in series at opposite ends, includes arranging the leg elements on an electrically conducting plate, connecting the leg elements to the electrically conducting plate, and cutting up the electrically conducting plate into a plurality of conductor tracks, which respectively connect two of the leg elements to one another. From a further aspect, a pre-product for the production of a thermoelectric module by such a method includes an electrically conducting plate with a plurality of conductor track regions for the formation of conductor tracks. The electrically conducting plate has a lower mechanical stability in at least one zone of weakness between two conductor track regions than in the conductor track regions.

Abstract: A material includes at least two different alloy phases. At least two alloy phases are each formed by at least one thermodynamically stable semi-Heusler alloy. The semi-Heusler alloys of the at least two alloy phases are different from one another. At least two of the semi-Heusler alloys have at least partly sintered particles that have an average particle size D50 in the range of less than or equal to 100 nm. Such a material has particularly good thermoelectric properties. A process is implemented to produce the material.

Abstract: A thermoelectric generator for a vehicle includes a generator housing arranged in an exhaust line of the vehicle and/or in a bypass to the exhaust line and at least one thermoelectric module assigned to at least one first exhaust gas contact surface. Thermal energy is transferred from the first exhaust gas contact surface to the thermoelectric module via at least one heat conduction path and at least one heat storage chamber filled with at least one heat storage material. The heat storage chamber is assigned at least one second exhaust gas contact surface from which thermal energy is configured to be transferred to the heat storage chamber. The heat storage chamber is arranged outside the heat conduction path from the first exhaust gas contact surface to the thermoelectric module. A heat storage device is provided for the thermoelectric generator of the vehicle.