Patents by Inventor Holger Althues
Holger Althues 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: 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: 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: 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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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: 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
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Patent number: 10090528Abstract: The invention relates to a cathode unit for an alkaline metal/sulphur battery, containing a cathode arrester, which comprises a carbon substrate, and an electrochemically active component, which is selected from sulphur or an alkaline metal sulphide and is in electrically conductive contact with the carbon substrate.Type: GrantFiled: June 19, 2012Date of Patent: October 2, 2018Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Markus Hagen, Holger Althues, Stefan Kaskel, Thomas Berger, Susanne Dörfler
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Patent number: 10062900Abstract: The present invention relates to a process for producing a cathode foil of a lithium-containing battery, comprising: (i) provision of a dry, solvent-free composition which comprises polytetrafluoroethylene, an electrically conductive, electrochemically inactive carbon material and an electrochemically active cathode material, (ii) formation of at least partially fibrillated polytetrafluoroethylene by action of shear forces on the dry, solvent-free composition to give a fibrillated composition, (iii) forming of the fibrillated composition to give a cathode foil.Type: GrantFiled: February 21, 2013Date of Patent: August 28, 2018Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.VInventors: Jan Bruckner, Sebastian Tschocke, Holger Althues, Stefan Kaskel, Soren Thieme
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Publication number: 20180151911Abstract: 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 sulfone and a fluorine-containing ether in a volume ratio of #1:4 (v:v). Through the use of said electrolyte, the shuttling of polysulfide species from the cathode to the anode can be effectively suppressed, without the use of LiNO3. Through the electrolyte in alkalisulfur 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 polysulfide inside the cathode. In addition, uses of components of the alkali-sulfur battery according to the invention are also disclosed.Type: ApplicationFiled: April 27, 2016Publication date: May 31, 2018Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Sören THIEME, Holger ALTHUES, Stefan KASKEL, Michael KOHL
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Patent number: 9768466Abstract: A Li—S battery including a cathode and an anode and at least one of a lithium-containing liquid electrolyte, gel electrolyte, and solid electrolyte disposed between the cathode and the anode. The cathode includes at least one of an electrically conductive carbon material, an electrochemically active cathode material that comprises sulphur, and at least partially fibrillar plastic material. The anode includes a conducting substrate which is coated at least in regions with at least one of silicon and tin. A method for operation thereof.Type: GrantFiled: September 13, 2013Date of Patent: September 19, 2017Assignees: Technische Universität Dresden, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Jan Brückner, Holger Althues, Stefan Kaskel, Sören Thieme, Ingolf Bauer
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Publication number: 20160175797Abstract: A reactor for producing nitrogen-containing fertilizer granules comprising a reactor vessel having inside walls coated with a layer of at least one organic silica compound.Type: ApplicationFiled: July 12, 2014Publication date: June 23, 2016Applicant: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Matthias POTTHOFF, Andreas GRULKE, Liliana KOTTE, Holger ALTHUES, Stefan KASKEL
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Publication number: 20160017157Abstract: 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: ApplicationFiled: March 13, 2014Publication date: January 21, 2016Inventors: Thomas ABENDROTH, Holger ALTHUES, Gerrit MAEDER, Stefan KASKEL
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Publication number: 20150249260Abstract: A Li—S battery including a cathode and an anode and at least one of a lithium-containing liquid electrolyte, gel electrolyte, and solid electrolyte disposed between the cathode and the anode. The cathode includes at least one of an electrically conductive carbon material, an electrochemically active cathode material that comprises sulphur, and at least partially fibrillar plastic material. The anode includes a conducting substrate which is coated at least in regions with at least one of silicon and tin. A method for operation thereof.Type: ApplicationFiled: September 13, 2013Publication date: September 3, 2015Inventors: Jan Brückner, Holger Althues, Stefan Kaskel, Sören Thieme, Ingolf Bauer
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Publication number: 20150249244Abstract: An alkali-chalcogen battery that includes a cathode that includes at least one of at least one chalcogen and at least one alkali-chalcogen compound, and an anode. At least one of an alkali metal-containing liquid electrolyte, gel electrolyte and solid electrolyte is disposed between the anode and the cathode. Also, a cation-selective separator is disposed at least in regions between the anode and the cathode, the separator being permeable for alkali metal ions and impermeable for polychalcogenide ions (Zn2? with n?2, Z representing the chalcogen), and the separator having a maximum layer thickness of 30 ?m.Type: ApplicationFiled: September 13, 2013Publication date: September 3, 2015Inventors: Sören Thieme, Jan Brückner, Ingolf Bauer, Holger Althues, Stefan Kaskel