Patents by Inventor Mengyan Hou

Mengyan Hou 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: 11430981
    Abstract: A material including TiO2 nanoparticles at least partially embedded in a matrix material of TixNbyOz, where 0<x?2, 0<y?24, and 0<z?62, is provided. Methods of making the material are also provided.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: August 30, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong Lu, Dewen Kong, Mengyan Hou, Zhe Li, Haijing Liu
  • Publication number: 20220263055
    Abstract: A method for forming a bipolar solid-state battery may include preparing a plurality of freestanding gels each comprising a polymer, a solvent, and a lithium salt and, also, positioning a first freestanding gel between a first electrode and a second electrode and a second freestanding gel between the second electrode and a third electrode. Each of the first electrode, the second electrode, and the third electrode may include a plurality of electroactive particles. The method may also include infiltrating at least a portion of the first free-standing gel into a space between particles of the first electrode and the second electrode and at least a portion of the second free-standing gel into a space between the particles of second electrode and the third electrode.
    Type: Application
    Filed: December 14, 2021
    Publication date: August 18, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan HOU, Qili SU, Meiyuan WU, Haijing LIU
  • Patent number: 11404714
    Abstract: A bipolar battery may comprise first, second, and third bipolar electrodes that are physically and electrically isolated from one another by intervening non-liquid electrolyte layers. Each of the bipolar electrodes may comprise a bipolar current collector including a first electroactive material layer connected to a first side thereof and a second electroactive material layer connected to a second side thereof. Each electroactive material layer may comprise at least one of: (i) a lithium ion battery positive electrode material, (ii) a lithium ion battery negative electrode material, and/or (iii) a capacitor electrode material. At least one of the electroactive material layers comprises a capacitor electrode material.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: August 2, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Haijing Liu, Mark W. Verbrugge, Qili Su, Meiyuan Wu
  • Patent number: 11374257
    Abstract: In an embodiment, a softened solid-state electrolyte, comprises an oxide-based solid-state electrolyte, where at least a portion of the oxide anions in the oxide-based solid-state electrolyte is replaced with a replacement anion. In another embodiment, a softened solid-state electrolyte comprises a sulfide-based solid-state electrolyte, wherein at least a portion of the sulfide anions in the sulfide-based solid-state electrolyte is replaced with the replacement anion. When the replacement anion replaces the oxide anion, the replacement anion has a larger atomic radius than the oxide anion and when the replacement anion replaces the sulfide anion, the replacement anion has a larger atomic radius than the sulfide anion.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: June 28, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Haijing Liu, Dewen Kong, Yong Lu
  • Publication number: 20220166017
    Abstract: A negative electrode and an electrochemical cell are provided herein. The negative electrode and the electrochemical cell include a protective coating for preventing and inhibiting growth of lithium dendrite on the negative electrode and growth into a separator. The protective coating includes a first layer and second layer. The first layer includes a first polymeric binder and an optional insulating material. The second layer includes a dendrite consuming material and a second polymeric binder.
    Type: Application
    Filed: November 23, 2021
    Publication date: May 26, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Qili SU, Mengyan HOU, Haijing LIU, Zhe LI
  • Patent number: 11295901
    Abstract: A bipolar capacitor-assisted solid-state battery is disclosed that includes a plurality of electrochemical battery unit cells, each of which includes a negative electrode, a positive electrode, and a lithium ion-conductive electrolyte-containing separator disposed between the negative electrode and the positive electrode. The lithium ion-conductive electrolyte-containing separator of each electrochemical battery unit cell comprises a solid-state electrolyte material, and, additionally, at least one negative electrode of the electrochemical battery unit cells or at least one positive electrode of the electrochemical battery unit cells includes a capacitor material. The bipolar capacitor-assisted solid-state battery further includes a bipolar current collector disposed between a negative electrode of one electrochemical battery unit cell and a positive electrode of an adjacent electrochemical battery unit cell.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: April 5, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Haijing Liu, Mark W. Verbrugge, Xiaochao Que, Qili Su, Meiyuan Wu
  • Patent number: 11121375
    Abstract: Individual electrodes for a solid-state lithium-ion battery cell may be formed, for example, by elevated temperature consolidation in air of a mixture of resin-bonded, electrode active material particles, oxide solid electrolyte particles, and particles of a non-carbon electronic conductive additive. Depending on the selected compositions of the electrode materials and the solid electrolyte, one or both of the cathode and anode layer members may be formed to include the non-carbon electronic conductive additive. The battery cell is assembled with the solid-state electrodes placed on opposite sides of a consolidated layer of oxide electrolyte particles. The electronic conductivity of at least one of the cathode and anode is increased by the incorporation of particles of a selected non-carbon electronic conducive additive with the respective electrode particles.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 14, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan Hou, Zhe Li, Dewen Kong, Haijing Liu, Qili Su
  • Publication number: 20210135224
    Abstract: A hybrid electrochemical device including at least two electrically connected solid-state electrochemical cells is provided. Each electrochemical cell includes a first outer electrode having a first current collector and a first electroactive layer, a second outer electrode having a second current collector and a second electroactive layer, and one or more intervening electrodes disposed between the electroactive layers. At least one of the intervening electrodes includes one or more capacitor additives. The first outer electrode is electrically connected to at least one of the intervening electrodes in a first electrical configuration. The second outer electrode is electrically connected to at least one of the intervening electrodes in a second electrical configuration. The at least two electrochemical cells are electrically connected in a third electrical configuration.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan HOU, Haijing LIU, Qili SU, Xiaochao QUE
  • Publication number: 20210110980
    Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes.
    Type: Application
    Filed: October 14, 2020
    Publication date: April 15, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qili SU, Haijing LIU, Meiyuan WU, Dewen KONG, Mengyan HOU
  • Publication number: 20210066746
    Abstract: In an embodiment, a softened solid-state electrolyte, comprises an oxide-based solid-state electrolyte, where at least a portion of the oxide anions in the oxide-based solid-state electrolyte is replaced with a replacement anion. In another embodiment, a softened solid-state electrolyte comprises a sulfide-based solid-state electrolyte, wherein at least a portion of the sulfide anions in the sulfide-based solid-state electrolyte is replaced with the replacement anion. When the replacement anion replaces the oxide anion, the replacement anion has a larger atomic radius than the oxide anion and when the replacement anion replaces the sulfide anion, the replacement anion has a larger atomic radius than the sulfide anion.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 4, 2021
    Inventors: Mengyan Hou, Haijing Liu, Dewen Kong, Yong Lu
  • Publication number: 20210066711
    Abstract: A material including TiO2 nanoparticles at least partially embedded in a matrix material of TixNbyOz, where 0<x?2, 0<y?24, and 0<z?62, is provided. Methods of making the material are also provided.
    Type: Application
    Filed: October 23, 2019
    Publication date: March 4, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Dewen KONG, Mengyan HOU, Zhe LI, Haijing LIU
  • Publication number: 20210050596
    Abstract: A solid-state battery cell for a lithium ion battery is disclosed. The battery cell includes a first electrode; a second electrode; and an ionically conductive layer sandwiched between the first electrode and the second electrode. At least one of the first electrode and the second electrode includes an electronically conductive polymer (ECP). The at least one of the first electrode and the second electrode comprises about 20-98 weight percent (wt %) of an active material, about 0.1-30 wt % of the ECP, and about 5-70 wt % of an ionically conductive material that includes one or more of a solid-state electrolyte (SSE) material and a lithium salt.
    Type: Application
    Filed: March 12, 2020
    Publication date: February 18, 2021
    Inventors: Zhe Li, Haijing Liu, Yong Lu, Mengyan Hou, Deween Kong
  • Publication number: 20210050157
    Abstract: A bipolar capacitor-assisted solid-state battery is disclosed that includes a plurality of electrochemical battery unit cells, each of which includes a negative electrode, a positive electrode, and a lithium ion-conductive electrolyte-containing separator disposed between the negative electrode and the positive electrode. The lithium ion-conductive electrolyte-containing separator of each electrochemical battery unit cell comprises a solid-state electrolyte material, and, additionally, at least one negative electrode of the electrochemical battery unit cells or at least one positive electrode of the electrochemical battery unit cells includes a capacitor material. The bipolar capacitor-assisted solid-state battery further includes a bipolar current collector disposed between a negative electrode of one electrochemical battery unit cell and a positive electrode of an adjacent electrochemical battery unit cell.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 18, 2021
    Inventors: Mengyan Hou, Haijing Liu, Mark W. Verbrugge, Xiaochao Que, Qili Su, Meiyuan Wu
  • Publication number: 20210036310
    Abstract: An electrode including micro-sized secondary particle (MSSP) with enhanced ionic conductivity for solid-state battery is provided. The MSSP comprises a cathode particle and a solid-state electrolyte. The cathode particle is at least partially coated by solid-state electrolyte. The lithium ion transport inside the micro-sized secondary particles is increased by the incorporation of solid-state electrolyte. The electrode can be prepared by casting the slurry comprising MSSP, another electrolyte, binders, and conductive additives on the current collector. The current collector is comprised of a conductive material. The current collector has a first side and a second side. The electrode active material layer is disposed on one of the first and second sides of the current collector.
    Type: Application
    Filed: October 10, 2019
    Publication date: February 4, 2021
    Inventors: Mengyan Hou, Zhe Li, Qili Su, Xiaochao Que, Meiyuan Wu
  • Publication number: 20210036385
    Abstract: An anode electrode with enhanced state of charge estimation is provided. The anode electrode comprises anode layer and a negative current collector. The negative current collector has a first side and a second side. The anode layer comprises lithium-titanium oxide and a second anode material (e.g. niobium-titanium oxide) disposed on at least one of the first and second sides of the negative current collector with single-layer or layer-by-layer coated structures. The second anode material (e.g. niobium-titanium oxide) can be physically blended with lithium-titanium oxide or be at least partially coated on the surface of lithium-titanium oxide or their combinations. The anode electrode further comprises a binder and a conductive carbon.
    Type: Application
    Filed: October 10, 2019
    Publication date: February 4, 2021
    Inventors: Yong Lu, Dewen Kong, Mengyan Hou, Zhe Li, Haijing Liu
  • Publication number: 20210028481
    Abstract: A bipolar battery may comprise first, second, and third bipolar electrodes that are physically and electrically isolated from one another by intervening non-liquid electrolyte layers. Each of the bipolar electrodes may comprise a bipolar current collector including a first electroactive material layer connected to a first side thereof and a second electroactive material layer connected to a second side thereof. Each electroactive material layer may comprise at least one of: (i) a lithium ion battery positive electrode material, (ii) a lithium ion battery negative electrode material, and/or (iii) a capacitor electrode material. At least one of the electroactive material layers comprises a capacitor electrode material.
    Type: Application
    Filed: July 26, 2019
    Publication date: January 28, 2021
    Inventors: Mengyan Hou, Haijing Liu, Mark W. Verbrugge, Qili Su, Meiyuan Wu
  • Publication number: 20210020929
    Abstract: Solid-state electrodes and methods of forming solid-state electrodes and batteries are provided. The method includes contacting an electrode precursor with a liquid. The liquid includes one or more precursors of an ionically conductive polymer. The electrode precursor includes a plurality of electroactive particles and a plurality of electrolyte particles disposed on a current collector. A plurality of interparticle pores exists between the electroactive and electrolyte particles. When the electrode precursor is contacted with the liquid, the liquid flows into the interparticle pores. The one or more precursors of the ionically conductive polymer are electropolymerized so as to cause the formation of a polymeric matrix (including the ionically conductive polymer) that surrounds and embeds the plurality of electroactive particles and the plurality of electrolyte particles so as to form the solid-state electrode.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 21, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Yong LU, Mengyan HOU, Zhe LI, Haijing LIU
  • Publication number: 20200403267
    Abstract: A lithium-ion battery cell is formed of a layer of anode material comprising a mixture of anode active material particles and particles of a first solid electrolyte composition, an electrolyte layer of solid electrolyte particles of a second solid electrolyte composition, and a layer of cathode material comprising a mixture of cathode active material particles and particles of a third solid electrolyte compositions. In the cell, the three solid electrolyte compositions are varied to enhance the performance of the cell. Layers of interlayer material are placed between one or both of the layers of electrode material and the solid electrolyte material and/or between electrolyte layers. And, optionally, the otherwise solid-state cell is infiltrated with a suitable liquid electrolyte. These variables are managed to enhance macro/micro interfaces between the solid materials and layers and to improve the electrochemical performance of the cell, especially for high-voltage cathode material.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 24, 2020
    Inventors: Zhe Li, Mengyan Hou, Haijing Liu, Dewen Kong, Yong Lu
  • Publication number: 20200119357
    Abstract: Individual electrodes for a solid-state lithium-ion battery cell may be formed, for example, by elevated temperature consolidation in air of a mixture of resin-bonded, electrode active material particles, oxide solid electrolyte particles, and particles of a non-carbon electronic conductive additive. Depending on the selected compositions of the electrode materials and the solid electrolyte, one or both of the cathode and anode layer members may be formed to include the non-carbon electronic conductive additive. The battery cell is assembled with the solid-state electrodes placed on opposite sides of a consolidated layer of oxide electrolyte particles. The electronic conductivity of at least one of the cathode and anode is increased by the incorporation of particles of a selected non-carbon electronic conducive additive with the respective electrode particles.
    Type: Application
    Filed: October 15, 2018
    Publication date: April 16, 2020
    Inventors: Mengyan Hou, Zhe Li, Dewen Kong, Haijing Liu, Qili Su
  • Publication number: 20170054143
    Abstract: The present invention relates to a method for preparing a graphene/HE-NCM composite, wherein more than one HE-NCM particles of the formula (1) xLi2MnO3.(1?x)LiNiyCozMn1-y-zO2, wherein 0<x<1, 0<y<1, and 0<z<1, are in electrical contact with each other via one or multiple graphene flakes, said method including: a) dispersing HE-NCM particles in a solution of graphene oxide by ultrasonication to give a dispersion; b) lyophilization of the dispersion to give a graphene oxide/HE-NCM composite; c) thermal decomposition of the graphene oxide/HE-NCM composite to give the graphene/HE-NCM composite. The present invention further relates to a graphene/HE-NCM composite for lithium ion battery prepared by said method, an electrode material and a lithium ion battery comprising said graphene/HE-NCM composite.
    Type: Application
    Filed: February 18, 2014
    Publication date: February 23, 2017
    Inventors: Mengyan Hou, Chuanling Li, Rongrong Jiang, Jinlong Liu, Lei Wang, Longjie Zhou, Yongyao Xia, Long Chen, Shaoshuai Guo