Patents by Inventor Ute Emmel

Ute Emmel 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).

  • Patent number: 12057573
    Abstract: The invention relates to composite materials comprising lithiated or partially-lithiated graphite or graphene, and silicon having particles sizes from about 1 ?m to about 100 ?m, and that have an electrochemical rest potential less than about 2 V measured against Li/Li+, wherein graphitic material is mixed with silicon powder in a molar ratio of 9:1 to 1:9 and with lithium powder to an amount of the lithium in the composite material in the range of about 10 molar % to 100 molar % of the stochiometrically maximally possible lithium absorption, and to methods for production thereof.
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: August 6, 2024
    Assignee: ALBEMARLE GERMANY GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Christopher Kurth, Stefan Scherer, Thorsten Buhrmester, Gerd Krämer
  • Patent number: 11230519
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: January 25, 2022
    Inventors: Ulrich Wietelmann, Ute Emmel, Armin Stoll, Florian Kiefer
  • Patent number: 11145910
    Abstract: Rechargeable, non-aqueous lithium batteries which contain, as active anode material, either lithium metal or a lithium alloy, an active cathode material with a redox potential in the range of between 1.5 and 3.4 V vs Li/Li+ and lithium rhodanide (LiSCN) as electrolyte component. One or more related methods for providing overcharge protection are also described herein.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: October 12, 2021
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Irina Wolf, Margret Wohlfahrt-Mehrens, Serife Kaymaksiz Tost, Florian Wilhelm, Mario Wachtler
  • Patent number: 11018334
    Abstract: The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [AR1R2R3R4]Lix (I), or R1R2R3A-O-AR4R5R6 (II), wherein R1R2R3R4R5R6=alkyl (C1-C12), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups R1 to R6 can comprise additional functional groups, such as alkoxy groups; A=boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x=0 or 1 for B, Al, Ga, In, Tl; x=0 for Si, Ge, Sn, Pb; in the case that x=0 and A=B, Al, Ga, In, Tl, R4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga, I
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: May 25, 2021
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Christoph Hartnig, Ute Emmel
  • Publication number: 20200123086
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Application
    Filed: December 17, 2019
    Publication date: April 23, 2020
    Inventors: Ulrich WIETELMANN, Ute EMMEL, Armin STOLL, Florian KIEFER
  • Publication number: 20200052347
    Abstract: Rechargeable, non-aqueous lithium batteries which contain, as active anode material, either lithium metal or a lithium alloy, an active cathode material with a redox potential in the range of between 1.5 and 3.4 V vs Li/Li+ and lithium rhodanide (LiSCN) as electrolyte component. One or more related methods for providing overcharge protection are also described herein.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Inventors: Ulrich Wietelmann, Ute Emmel, Irina Wolf, Margret Wohlfahrt-Mehrens, Serife Kaymaksiz Tost, Florian Wilhelm, Mario Wachtler
  • Patent number: 10544074
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 28, 2020
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Armin Stoll, Florian Kiefer
  • Patent number: 10522819
    Abstract: Described is a coated, (partly) lithiated graphite powder characterized in that it has been produced in a non-electrochemical process from metallic lithium and graphite in powder form and has been stabilized outside an electrochemical cell by application of a coating layer; and a galvanic cell comprising a cathode, a lithium-conductive electrolyte-separator system and an anode comprising a coated, (partly) lithiated graphite powder, where the (partial) lithiation and the coating of the graphite powder are performed non-electrochemically outside the galvanic cell (ex situ).
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 31, 2019
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Vera Nickel, Stefan Scherer, Ute Emmel, Thorsten Buhrmester, Steffen Haber, Gerd Krämer
  • Publication number: 20190393497
    Abstract: The invention relates to composite materials comprising lithiated or partially-lithiated graphite or graphene, and silicon having particles sizes from about 1 ?m to about 100 ?m, and that have an electrochemical rest potential less than about 2 V measured against Li/Li+, wherein graphitic material is mixed with silicon powder in a molar ratio of 9:1 to 1:9 and with lithium powder to an amount of the lithium in the composite material in the range of about 10 molar % to 100 molar % of the stochiometrically maximally possible lithium absorption, and to methods for production thereof.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Inventors: Ulrich Wietelmann, Ute Emmel, Gerd Krämer, Christopher Kurth, Stefan Scherer, Thorsten Buhrmester
  • Patent number: 10431818
    Abstract: The present invention relates to methods for providing an active lithium reservoir to reduce the irreversible initial losses and as a general lithium source of or for electrode materials and lithium batteries, and a powdered lithium-donating material having an electrochemical potential of 0.5 and 2 V vs. Li/Li+, which has been selected from the group of lithium hydride, lithium amide, lithium imide and tetra-lithium ammonium hydride, is used as a general lithium source.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: October 1, 2019
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Stefan Scherer, Christoph Hartnig
  • Patent number: 10160036
    Abstract: The invention relates to particulate lithium metal formations having a substantially spherical geometry and a core composed of metallic lithium, which are enclosed with an outer passivating but ionically conductive layer containing nitrogen. The invention further relates to a method for producing lithium metal formations by reacting lithium metal with one or more passivating agent(s) containing nitrogen, selected from the groups N2, NxHy with x=1 or 2 and y=3 or 4, or a compound containing only the elements C, H, and N, and optionally Li, at temperatures in the range between 60 and 300° C., preferably between 100 and 280° C., and particularly preferably above the melting temperature of lithium of 180.5° C., in an inert organic solvent under dispersion conditions or in an atmosphere that contains a gaseous coating agent containing nitrogen.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 25, 2018
    Assignee: ALBEMARLE GERMANY GMBH
    Inventors: Ulrich Wietelmann, Christoph Hartnig, Ute Emmel, Vera Nickel
  • Publication number: 20180261834
    Abstract: The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [AR1R2R3R4]Lix (I), or R1R2R3A-O-AR4R5R6 (II), wherein R1R2R3R4R5R6=alkyl (C1-C12), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups R1 to R6 can comprise additional functional groups, such as alkoxy groups; A=boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x=0 or 1 for B, Al, Ga, In, Tl; x=0 for Si, Ge, Sn, Pb; in the case that x=0 and A=B, Al, Ga, In, Tl, R4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga, I
    Type: Application
    Filed: April 6, 2018
    Publication date: September 13, 2018
    Inventors: Ulrich Wietelmann, Christoph Hartnig, Ute Emmel
  • Publication number: 20180019463
    Abstract: The invention relates to composite materials of general composition SixC10-xLi in which x can be any value from 1-9 and z=a(4,4x+1/6(10-x)) and a=any value from 0.1-1, which can be used as highly capacitive anode materials for galvanic cells with non-aqueous electrolytes, and to a method for the production thereof.
    Type: Application
    Filed: January 27, 2016
    Publication date: January 18, 2018
    Inventors: Ulrich Wietelmann, Ute Emmel, Gerd Krämer, Christopher Kurth, Stefan Scherer, Thorsten Buhrmester
  • Patent number: 9847552
    Abstract: A solvent-free mixture of a crude lithium borate salt and lithium hydride, wherein the lithium hydride is at least 0.001 wt. % and at most 10 wt. %, relative to the weight of crude lithium borate salt, wherein the mixture has a water content of at most 100 ?mol/g and an acid content of at most 10 ?mol H+/g of crude lithium borate salt, method for producing the same, and use thereof for battery electrolytes.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: December 19, 2017
    Assignee: ALBERMARLE GERMANY GMBH
    Inventors: Rainer Dietz, Ulrich J. Wietelmann, Uwe Lischka, Ute Emmel
  • Patent number: 9809657
    Abstract: A solution of a mixed alkaline earth alkoxide compound with an aluminum compound in an aprotic solvent, and methods of making and using them.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: November 7, 2017
    Assignee: ALBEMARLE GERMANY GMBH
    Inventors: Ulrich Wietelmann, Armin Stoll, Florian Kiefer, Ute Emmel
  • Publication number: 20170247305
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)OR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Application
    Filed: August 12, 2015
    Publication date: August 31, 2017
    Inventors: Ulrich WIETELMANN, Ute EMMEL, Armin STOLL, Florian KIEFER
  • Patent number: 9649688
    Abstract: A lithium anode containing spherical lithium metal particles with an average diameter of between 5 and 200 ?m, which are bonded with a fluorine-free rubber-like binding agent from the groups saturated polyolefins and polyolefin copolymers, such as EPM (ethylene-propylene copolymers), EPDM (ethylene-propylene terpolymers) and polybutenes unsaturated polymers (diene polymers and diene copolymers), such as natural rubbers (NR), butadiene rubbers (BR), styrene-butadiene rubbers (SBR), polyisoprene rubbers and butyl rubbers (IIR, such as polyisobutylene isoprene rubber, PIBI) as well as heteroelement-containing copolymers, for example saturated copolymer rubbers, such as ethylene vinyl acetate (EVM), hydrogenated nitrile-butadiene rubber (HNBR), epichlorhydrin rubber (ECO), acrylate rubbers (ACM) and silicon rubbers (SI), as well as unsaturated copolymers, such as nitrile rubbers (NBR), for example, as well as galvanic cells containing the bonded lithium anode according to the invention and method for producin
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 16, 2017
    Assignee: Rockwood Lithium GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Christoph Hartnig
  • Patent number: 9601762
    Abstract: A particulate lithium metal composite materials having a layer containing phosphorous and a method for producing said phosphorous-coated lithium metal products, characterized in that melted, droplet-shaped lithium metal is reacted in a hydrocarbon solvent with a phosphorous source that contains the phosphorous in the oxidation stage 3, and use thereof for the pre-lithiation of electrode materials and the production of battery anodes.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: March 21, 2017
    Assignee: Rockwood Lithium GmbH
    Inventors: Ulrich Wietelmann, Christoph Hartnig, Ute Emmel, Sven Schröter
  • Publication number: 20160351893
    Abstract: The invention relates to a galvanic cell containing a cathode, a lithium-conductive electrolyte separator system, and a synthetic graphite-containing anode. In the manufacture of the cell (i.e. prior to the first charging cycle), the anode contains or consists of a (partially) lithiated graphite powder which is produced from synthetic graphite and lithium powder in a non-electrochemical manner. The invention also relates to a method for (partially) lithiating synthetic graphite in an electroless manner. The invention is characterized in that the particulate synthetic graphite is (partially) lithiated in an electroless manner after mixing with particulate lithium metal powder and by means of a mixing and/or milling process, thereby forming Li graphite intercalates of the composition LiCx (mit x=6?600).
    Type: Application
    Filed: February 13, 2015
    Publication date: December 1, 2016
    Inventors: Ulrich Wietelmann, Vera Nickel, Stefan Scherer, Ute Emmel, Thorsten Buhrmester, Steffen Haber, Gerd Krämer
  • Publication number: 20160351888
    Abstract: Described is a coated, (partly) lithiated graphite powder characterized in that it has been produced in a non-electrochemical process from metallic lithium and graphite in powder form and has been stabilized outside an electrochemical cell by application of a coating layer; and a galvanic cell comprising a cathode, a lithium-conductive electrolyte-separator system and an anode comprising a coated, (partly) lithiated graphite powder, where the (partial) lithiation and the coating of the graphite powder are performed non-electrochemically outside the galvanic cell (ex situ).
    Type: Application
    Filed: February 13, 2015
    Publication date: December 1, 2016
    Inventors: Ulrich WIETELMANN, Vera NICKEL, Stefan SCHERER, Ute EMMEL, Thorsten BUHRMESTER, Steffen HABER, Gerd KRÄMER