Patents by Inventor Stefan Kaskel
Stefan Kaskel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12384987Abstract: The metal organic framework (MOF) MIL-100 (Al) can be produced in a process in which aluminum nitrate and trimesic acid are brought to react with one another in an alcohol/water mixture under the action of NH3 and/or an NH3-releasing compound under mild conditions.Type: GrantFiled: June 18, 2021Date of Patent: August 12, 2025Assignee: Henkel AG & Co. KGaAInventors: Christian Kropf, Marc Weyhe, Stefan Kaskel, Steffen Hausdorf, Philipp Mueller
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Publication number: 20250029975Abstract: The invention relates to a method for solvent-free production of an electrode. By means of the method it is possible to produce an electrode which has high mechanical stability and which provides a high specific capacitance. The method also enables the production of an electrode which can be used as an anode in a lithium-ion battery, without giving rise to unstable operation with undesirable and irreversible degradation reactions. An electrode is also provided, which has the above-mentioned advantages. In addition, uses of the electrode according to the invention are proposed.Type: ApplicationFiled: August 17, 2022Publication date: January 23, 2025Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITÄT DRESDENInventors: Florian SCHMIDT, Susanne DÖRFLER, Holger ALTHUES, Stefan KASKEL, Benjamin SCHUMM, Sebastian TSCHÖKE
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Patent number: 12100858Abstract: A method for producing a solid electrolyte membrane (3) or an anode unit for a solid-state battery, in which method a powder mixture consisting of a solid electrolyte material and polytetrafluoroethylene is produced for the solid electrolyte membrane (3) and a powder mixture consisting of an electrode material, a solid electrolyte material, an electrically conductive conduction additive and polytetrafluoroethylene is produced for the anode unit, at least partially fibrillated polytetrafluoroethylene is formed by applying shear forces to the powder mixture, and the powder mixture is shaped into a flexible composite layer. The powder mixture has at most 1 wt. % polytetrafluoroethylene.Type: GrantFiled: December 17, 2019Date of Patent: September 24, 2024Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG B.V., TECHNISCHE UNIVERSITÄT DRESDENInventors: Felix Hippauf, Benjamin Schumm, Sebastian Tschoecke, Holger Althues, Stefan Kaskel, Susanne Doerfler
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Publication number: 20240274784Abstract: The invention relates to a method for producing dry film (3), wherein a dry powder mixture is processed into the dry film (3) by a rolling device comprising a first roller (2a) and a second roller (2b). The first roller (2a) has a higher circumferential rotational peripheral speed than the second roller (2b), and the dry film (3) is placed on the first roller (2a) wherein the rotational peripheral speed of the first roll to the rotational peripheral speed of the second roll of 10:9 to 10:1 is maintained.Type: ApplicationFiled: April 2, 2024Publication date: August 15, 2024Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITAT DRESDENInventors: Holger ALTHUES, Sebastian TSCHOECKE, Benjamin SCHUMM, Stefan KASKEL, Christian GIRSULE, Daniel JORDAN, Kay SCHOENHERR
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Patent number: 11990599Abstract: The invention relates to a method for producing a dry film (3), wherein a dry powder mixture is processed into the dry film (3) by a rolling device comprising a first roller (2a) and a second roller (2b). The first roller (2a) has a higher circumferential rotational speed than the second roller (2b), and the dry film (3) is placed on the first roller (2a).Type: GrantFiled: May 14, 2018Date of Patent: May 21, 2024Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITAT DRESDENInventors: Holger Althues, Sebastian Tschoecke, Benjamin Schumm, Stefan Kaskel, Christian Girsule, Daniel Jordan, Kay Schoenherr
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Patent number: 11961970Abstract: A lithium sulfur battery with a low solvating electrolyte at an amount of less than 2 ?l per mg sulfur. The electrolyte comprises dioxolane and hexylmethylether, as well as a Li salt, for example LiTSFi. The electrolyte is free from lithium nitrate, LiNO3.Type: GrantFiled: January 14, 2020Date of Patent: April 16, 2024Assignee: SCEYE SAInventors: Mikkel Vestergaard Frandsen, David Kim, Holger Althues, Paul Hartel, Thomas Abendroth, Susanne Dörfler, Benjamin Schumm, Stefan Kaskel, Christine Weller
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Patent number: 11594760Abstract: The invention relates to an electrolyte, which is provided for an alkali-sulfur battery (e.g. for a Li—S battery). The electrolyte contains a non-polar, acyclic and non-fluorinated ether, a polar aprotic organic solvent, and a conducting salt for an alkali-sulfur battery. It has been found that, when such an electrolyte is used in an alkali-sulfur battery, a high-capacity, a low overvoltage, a high cycle stability, and a high Coulomb efficiency can be achieved in the alkali-sulfur battery and, in addition, as compared with an alkali-sulfur battery which contains a fluorinated ether in the electrolyte, a considerably improved gravimetric energy density is obtained. The invention further relates to a battery comprising the electrolyte according to the invention and to uses of the electrolyte according to the invention.Type: GrantFiled: May 30, 2018Date of Patent: February 28, 2023Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.Inventors: Christine Weller, Holger Althues, Susanne Dörfler, Stefan Kaskel
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Patent number: 11545654Abstract: The present invention relates to a method for producing a substrate (2) which is coated with an alkali metal (1), in which method a promoter layer (3) which is composed of a material which reacts with the alkali metal (1) by at least partial chemical reduction of the promoter layer (3) is applied to a surface of the substrate (2) and a surface of the promoter layer (3) is acted on by an alkali metal (1) and then the alkali metal (1) is converted into the solid phase and a coating containing the alkali metal is formed.Type: GrantFiled: May 15, 2018Date of Patent: January 3, 2023Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V, TECHNISCHE UNIVERSITÄT DRESDENInventors: Stefan Kaskel, Holger Althues, Benjamin Schumm, Nicolai Dresel, Kay Schoenherr
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Publication number: 20220359872Abstract: The invention relates to alkaline secondary batteries. The secondary battery contains a cathode, an anode and an electrolyte, said secondary battery being arranged between the cathode and anode and comprises an alkali metal ion conductive contact to the cathode and to the carbon layer of the anode. The anode contains or consists of a carbon layer, whereby the carbon layer, alone or in combination with an electrically conductive substrate, forms with an electrically conductive contact.Type: ApplicationFiled: June 16, 2020Publication date: November 10, 2022Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V., TECHNISCHE UNIVERSITÄT DRESDENInventors: Felix HIPPAUF, Susanne DÖRFLER, Holger ALTHUES, Stefan KASKEL, Jonas PAMPEL, Luise BLOI
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Publication number: 20220085416Abstract: A lithium sulfur battery with a low solvating electrolyte at an amount of less than 2 ?l per mg sulfur. The electrolyte comprises dioxolane and hexylmethylether, as well as a Li salt, for example LiTSFi. The electrolyte is free from lithium nitrate, LiNO3.Type: ApplicationFiled: January 14, 2020Publication date: March 17, 2022Inventors: Mikkel Vestergaard Frandsen, David Kim, Holger Althues, Paul Härtel, Thomas Abendroth, Susanne Dörfler, Benjamin Schumm, Stefan Kaskel, Christine Weller
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Publication number: 20220029166Abstract: A cathode unit for a solid-state battery and a method for producing the cathode unit. The cathode unit has a layer made of a composite material (2) which has an electrode material, a solid electrolyte material, an electrically conductive conducting additive and polyetrafluoroethylene as a binder. The composite material contains less than 1 wt. % polyetrafluoroethylene and the polyetrafluoroethylene is present, at least in part, as fibrillated polyetrafluoroethylene.Type: ApplicationFiled: December 17, 2019Publication date: January 27, 2022Applicants: Fraunhofer-Gesellschaft Zur Foerderung Angewandten Forschung E.V., Technische Universitaet DresdenInventors: Felix HIPPAUF, Benjamin SCHUMM, Sebastian TSCHOECKE, Holger ALTHUES, Stefan KASKEL, Susanne DOERFLER
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Publication number: 20220029242Abstract: A method for producing a solid electrolyte membrane (3) or an anode unit for a solid-state battery, in which method a powder mixture consisting of a solid electrolyte material and polytetrafluoroethylene is produced for the solid electrolyte membrane (3) and a powder mixture consisting of an electrode material, a solid electrolyte material, an electrically conductive conduction additive and polytetrafluoroethylene is produced for the anode unit, at least partially fibrillated polytetrafluoroethylene is formed by applying shear forces to the powder mixture, and the powder mixture is shaped into a flexible composite layer. The powder mixture has at most 1 wt. % polytetrafluoroethylene.Type: ApplicationFiled: December 17, 2019Publication date: January 27, 2022Applicants: Fraunhofer-Gesellschaft Zur Foerderung der Angewandten Forschung E.V., Technische Universitaet DresdenInventors: Felix HIPPAUF, Benjamin SCHUMM, Sebastian TSCHOECKE, Holger ALTHEUS, Stefan KASKEL, Susanne DOERFLER
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Publication number: 20210320288Abstract: The invention relates to a method for producing a dry film (3), wherein a dry powder mixture is processed into the dry film (3) by a rolling device comprising a first roller (2a) and a second roller (2b). The first roller (2a) has a higher circumferential rotational speed than the second roller (2b), and the dry film (3) is placed on the first roller (2a).Type: ApplicationFiled: May 14, 2018Publication date: October 14, 2021Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITAT DRESDENInventors: Holger ALTHUES, Sebastian TSCHOECKE, Benjamin SCHUMM, Stefan KASKEL, Christian SCHULT, Daniel FRITSCHE, Kay SCHOENHERR
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Publication number: 20210309937Abstract: The metal organic framework (MOF) MIL-100(Al) can be produced in a process in which aluminum nitrate and trimesic acid are brought to react with one another in an alcohol/water mixture under the action of NH3 and/or an NH3-releasing compound under mild conditions.Type: ApplicationFiled: June 18, 2021Publication date: October 7, 2021Inventors: Christian Kropf, Marc Weyhe, Stefan Kaskel, Steffen Hausdorf, Philipp Mueller
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Publication number: 20210151801Abstract: The invention relates to an electrolyte, which is provided for an alkali-sulfur battery (e.g. for a Li—S battery). The electrolyte contains a non-polar, acyclic and non-fluorinated ether, a polar aprotic organic solvent, and a conducting salt for an alkali-sulfur battery. It has been found that, when such an electrolyte is used in an alkali-sulfur battery, a high-capacity, a low overvoltage, a high cycle stability, and a high Coulomb efficiency can be achieved in the alkali-sulfur battery and, in addition, as compared with an alkali-sulfur battery which contains a fluorinated ether in the electrolyte, a considerably improved gravimetric energy density is obtained. The invention further relates to a battery comprising the electrolyte according to the invention and to uses of the electrolyte according to the invention.Type: ApplicationFiled: May 30, 2018Publication date: May 20, 2021Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.Inventors: Christine WELLER, Holger ALTHUES, Susanne DÖRFLER, Stefan KASKEL
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Publication number: 20210020979Abstract: According to the invention, an electrolyte is provided for an alkali-sulfur battery. An alkali-sulfur battery is also provided, which contains the electrolyte according to the invention. The electrolyte according to the invention contains a mixture of a sulphone and a fluorine-containing ether in a volume ratio of #1:4 (v:v). Through the use of said electrolyte, the shuttling of polysulphide species from the cathode to the anode can be effectively suppressed, without the use of LiNO3. Through the electrolyte in alkali-sulfur batteries, a high coulombic efficiency, long-term stability (low self-discharge) and cycle durability can be achieved even without the use of LiNO3. Coloumbic efficiency, long-term stability and cycle durability can be further improved through the use of a cathode which contains an additive for uniform distribution of polysulphide inside the cathode. In addition, uses of components of the alkali-sulfur battery according to the invention are also disclosed.Type: ApplicationFiled: September 29, 2020Publication date: January 21, 2021Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.Inventors: Sören THIEME, Holger ALTHUES, Stefan KASKEL, Michael KOHL
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Patent number: 10874891Abstract: The invention relates to methods for producing hydrophobized, doped or non-doped mixed metal oxide nanoparticles or doped metal oxide nanoparticles by flame spray pyrolysis, wherein a combustible precursor solution A, containing at least two metal alkyloates of general formula Me(OOC—R)x with differing metals Me, or a combustible precursor solution B containing at least one metal alkyloate of general formula Me(OOC—R)x and at least one metal salt containing a metal ion Me and at least one metal salt containing a metal ion Me, with Me selected from metal ions of the subgroups of the periodic system of the elements, with R=alkyl or aryl, wherein the alkyl chain is branched or straight, and wherein x corresponds to the oxidation step of the metal ion, is used in stoichiometric excess relative to a quantity of oxygen, and wherein a combustion ratio ? of 3.5 bis 0.4 is established, and hydrophobized nanoparticles and the use thereof.Type: GrantFiled: July 1, 2016Date of Patent: December 29, 2020Assignee: TECHNISCHE UNIVERSITÄT DRESDENInventors: Tim Biemelt, Julia Grothe, Stefan Kaskel, Karl Wegner
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Publication number: 20200099039Abstract: The present invention relates to a method for producing a substrate (2) which is coated with an alkali metal (1), in which method a promoter layer (3) which is composed of a material which reacts with the alkali metal (1) by at least partial chemical reduction of the promoter layer (3) is applied to a surface of the substrate (2) and a surface of the promoter layer (3) is acted on by an alkali metal (1) and then the alkali metal (1) is converted into the solid phase and a coating containing the alkali metal is formed.Type: ApplicationFiled: May 15, 2018Publication date: March 26, 2020Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., TECHNISCHE UNIVERSITAT DRESDENInventors: Stefan KASKEL, Holger ALTHUES, Benjamin SCHUMM, Nicolai DRESEL, Kay SCHOENHERR
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Patent number: 10457895Abstract: A washing or cleaning agent that has MOFs (metal organic frameworks) in order to reduce offensive odor, a method for reducing malodors, and the use of MOFs to reduce malodors.Type: GrantFiled: December 21, 2017Date of Patent: October 29, 2019Assignees: Henkel AG & Co. KGaA, Technische Universität Dresden Fachbereich Anorganische Chemie IInventors: Christian Kropf, Matthias Sunder, Ursula Huchel, Peter Schmiedel, Marc Weyhe, Stefan Kaskel, Anja Guenther, Steffen Hausdorf
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Patent number: 10351717Abstract: The invention relates to a coating which has special absorption properties for electromagnetic radiation from the wavelength spectrum of sunlight and to a method for producing the coating and to its use. The coating is formed by a layer which is formed on the surface of a substrate or on a reflective layer formed on the surface of the substrate. Carbon nanotubes are contained in the layer. The proportion of carbon nanotubes contained per unit of area or unit of volume and/or the layer thickness of the layer is selected such that it absorbs electromagnetic radiation from the wavelength spectrum of sunlight at predefinable proportions and the proportion of electromagnetic radiation from the wavelength spectrum of a black radiator at a temperature greater than 50° C. which is emitted is very small.Type: GrantFiled: March 13, 2014Date of Patent: July 16, 2019Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Thomas Abendroth, Holger Althues, Gerrit Maeder, Stefan Kaskel