Patents by Inventor Meiyuan Wu

Meiyuan Wu 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).

  • Publication number: 20220367848
    Abstract: The present disclosure provides an electrochemical cell that includes a double-sided electrode. The double-sided electrode includes a first electroactive material layer, a second electroactive material layer, and a current collector disposed between the first and second electroactive material layers. Each of the first and second electroactive material layers may include a plurality of electroactive material sub-films and a plurality of buffer layers disposed between adjacent electroactive material sub-films. The electrochemical cell further includes a first single-sided electrode substantially aligned with the first electroactive material layer; a first separator physically separating the first single-sided electrode and the first electroactive material layer; a second single-sided electrode substantially aligned with the second electroactive material layer; and a second separator physically separating the second single-sided electrode and the second electroactive material layer.
    Type: Application
    Filed: March 9, 2022
    Publication date: November 17, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Haijing LIU, Meiyuan WU, Xiaochao QUE, Sherman H. ZENG, Xiaosong HUANG
  • Publication number: 20220336880
    Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhiqiang YU, Haijing LIU, Xiaochao QUE, Dave Gerard RICH, Saad HASAN, Meiyuan WU
  • Publication number: 20220302526
    Abstract: The present disclosure provides a solid-state battery including at least one current collector that is in communication with one or more switches configured to move between open and closed positions, where the open position corresponds to a first operational state of the solid-state battery and the closed position corresponds to a second operational state of the solid-state battery; one or more electrodes disposed adjacent to the one or more current collectors; and one or more electrothermal material foils including a resistor material that is in electrical communication with that at least one current collector, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode, and in the second operational state electrons may flow through the current collector during cycling of the solid-state battery so as to initiate a non-heating mode.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 22, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Xiaochao QUE, Haijing LIU, Yong LU, Meiyuan WU, Jingyuan 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: 11411261
    Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 9, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhiqiang Yu, Haijing Liu, Xiaochao Que, Dave G. Rich, Saad Hasan, Meiyuan Wu
  • 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
  • Publication number: 20220181598
    Abstract: The present disclosure relates to a solid-state electrochemical cell having a uniformly distributed solid-state electrolyte and methods of fabrication relating thereto. The method may include forming a plurality of apertures within the one or more solid-state electrodes; impregnating the one or more solid-state electrodes with a solid-state electrolyte precursor solution so as to fill the plurality of apertures and any other void or pores within the one or more electrodes with the solid-state electrolyte precursor solution; and heating the one or more electrodes so as to solidify the solid-state electrolyte precursor solution and to form the distributed solid-state electrolyte.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 9, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Yong LU, Zhe LI, Xiaochao QUE, Haijing LIU, Meiyuan WU
  • Publication number: 20220181635
    Abstract: An asymmetric hybrid electrode for a capacitor-assisted battery includes a current and first and second electroactive portions. The first electroactive portion is on a first surface of the current collector. The first electroactive portion includes a first battery layer. The first battery layer includes a first battery electroactive material and a first binder. The second electroactive portion is on a second surface of the current collector opposite the first surface. The second electroactive portion includes a second battery layer and a capacitive layer. The second battery layer includes a second battery electroactive material and a second binder. The capacitive layer includes a capacitive electroactive material and a third binder. The first and second electroactive portions are asymmetric. The first and second battery electroactive materials are both positive electroactive materials or both negative electroactive materials. The asymmetric hybrid electrode has a capacitor hybridization ratio of 0.01-1%.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 9, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen Kong, Xiaochao Que, Meiyuan Wu, Haijing Liu
  • Publication number: 20220181685
    Abstract: A method for forming a bipolar solid-state battery includes preparing a mixture of gel precursor solution and solid electrolyte. The gel precursor includes a polymer, a first solvent, and a liquid electrolyte. The liquid electrolyte includes a second solvent, a lithium salt, and electrolyte additive. The method includes loading the mixture onto at least one of a first electrode, a second electrode, and a third electrode. Each of the first, second, and third electrodes includes a plurality of solid-state electroactive particles. The method includes removing at least a portion of the first solvent from the mixture to form a gel and positioning one of the first, second, and third electrodes with respect to another of the first, second, and third electrodes. The method includes applying a polymer blocker to a border of the first, second, or third electrodes.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 9, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Zhe LI, Meiyuan WU, Yong LU, Haijing LIU, Xiaochao QUE
  • Publication number: 20220181629
    Abstract: The present disclosure relates to an electrochemical cell having an elastic binding polymer that improves long-term performance of the electrochemical cell, particularly when the electrochemical cell includes an electroactive material that undergoes volumetric expansion and contraction during cycling of the electrochemical cell (such as, silicon-containing electroactive materials). The electrochemical cell can include the elastic binding polymer as an electrode additive and/or a coating layer disposed adjacent to an exposed surface of an electrode that includes an electroactive material that undergoes volumetric expansion and contraction and/or a gel layer disposed adjacent to an electrode that includes an electroactive material that undergoes volumetric expansion and contraction. The elastic binding polymer may include one or more alginates or alginate derivatives and at least one crosslinker.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 9, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong Lu, Zhe Li, Meiyuan Wu, Haijing Liu
  • Publication number: 20220173377
    Abstract: The present disclosure relates to high capacity (e.g., areal capacity greater than about 4 mAh/cm2 to less than or equal to about 50 mAh/cm2) electrodes for electrochemical cells. An example electrode may include a current collector (e.g., meshed current collector) and one or more electroactive material layers having thicknesses greater than about 150 ?m to less than or equal to about 5 mm. The electroactive material layers may each include lithium manganese iron phosphate (LiMnxFe1-xPO4, where 0?x?1) (LMFP). The electrode may further include one or more electronically conductive adhesive layers disposed between the current collector and the electroactive material layers. The adhesive layers may include one or more polymer components and one or more conductive fillers. The electroactive material layers may be gradient layers, where sublayers closer to the current collector has a lower porosity than layers further from the current collector.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Dewen KONG, Xiaochao QUE, Haijing LIU, Xiaosong HUANG, Mark W. VERBRUGGE, Meiyuan WU
  • Publication number: 20220173370
    Abstract: A method of manufacturing an electrode for an electrochemical cell includes providing an admixture including an electroactive material, a binder, and a solvent. The method further includes rolling the admixture to form a sheet and forming a multi-layer stack from the sheet. The method further includes forming an electrode film precursor by performing a plurality of sequential rollings, each including rolling the stack through a first gap. The plurality of sequential rollings includes first and second rollings. In the first rolling, the stack is in a first orientation. In the second rolling, the stack is in a second orientation different from the first orientation. The method further includes forming an electrode film by rolling the electrode film precursor through a second gap less than or equal to the first gap. The method further includes drying the electrode film to remove at least a portion of the solvent.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: GM Global Technology Operations LLC
    Inventors: Dewen KONG, Xiaochao QUE, Meiyuan WU, Haijing LIU, Xiaosong HUANG, Mark W. VERBRUGGE
  • Publication number: 20220166031
    Abstract: The present disclosure provides a solid-state bipolar battery that includes negative and positive electrodes having thicknesses between about 100 ?m and about 3000 ?m, and a solid-state electrolyte layer disposed between the negative electrode and the positive electrode and having a thickness between about 5 ?m and about 100 ?m. The first electrode includes a plurality of negative solid-state electroactive particles embedded on or disposed within a first porous material. The second electrode includes plurality of positive solid-state electroactive particles embedded on or disposed within a second porous material that is the same or different from the first porous material. The solid-state bipolar battery includes a first current collector foil disposed on the first porous material, and a second current collector foil disposed on the second porous material. The first and second current collector foils may each have a thickness less than or equal to about 10 ?m.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 26, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Xiaochao QUE, Haijing LIU, Yong LU, Meiyuan WU, Thomas A. YERSAK, Mei CAI
  • Publication number: 20220140422
    Abstract: A solid-state electrochemical cell that cycles lithium ions is provide, where the electrochemical cell has an electrolyte layer in a solid-state or semi-solid state defining a first surface. A solid electrode having an electroactive material that defines a second surface is present. A hybrid capacitor material including a metal organic framework intermingled with solid-state electrolyte particles is disposed in at least one of the following: the solid electrode, an interfacial layer disposed between the first surface of the electrolyte and the second surface of the solid electrode, or both in the solid electrode and the interfacial layer.
    Type: Application
    Filed: October 13, 2021
    Publication date: May 5, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Si CHEN, Yong LU, Meiyuan WU, Haijing LIU, Zhe LI
  • Publication number: 20220123352
    Abstract: A high-temperature stable solid-state bipolar battery is provided. The battery includes two or more electrodes, one or more solid-state electrolyte layers, and an ionogel disposed within void spaces within the battery. Each electrode includes a plurality of solid-state electroactive particles. Each solid-state electrolyte layer includes a plurality of solid-state electrolyte particles and a first solid-state electrolyte layer of the one or more solid-state electrolyte layers may be disposed between a first electrode and a second electrode of the two or more electrodes. The ionogel is disposed within void spaces between the two or more electrodes, the solid-state electroactive particles of the two or more electrodes, the solid-state electrolyte particles of the one or more solid-state electrolyte layers, and the one or more solid-state electrolyte layers, such that the battery has an reduced interparticle porosity. The ionogel may have an ionic conductivity between about 0.1 mS/Cm and about 10 mS/cm.
    Type: Application
    Filed: September 21, 2021
    Publication date: April 21, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Yong LU, Qili SU, Meiyuan WU, Haijing LIU
  • 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
  • Publication number: 20220021044
    Abstract: A thermal device comprises a first layer of a non-metallic material that is a good conductor of heat and electricity, that includes a first terminal and a second terminal, and that has a first surface and a second surface; a metallic material disposed on the first surface of the first layer; a first plastic layer disposed on the metallic material; and a second plastic layer disposed on the second surface of the first layer. The first plastic layer and the second plastic layer include a plastic material that is a good conductor of heat.
    Type: Application
    Filed: March 17, 2021
    Publication date: January 20, 2022
    Inventors: Dewen KONG, Dave G. RICH, Lyall K. WINGER, Meiyuan WU, Jingyuan LIU, Haijing LIU
  • Patent number: 11217826
    Abstract: A method of making the sulfide-impregnated solid-state battery is provided. The method comprises providing a cell core that is constructed by cell unit. The cell core is partially sealed into the packaging such as the Al laminated film and metal can. The method further comprises introducing a sulfide solid-state electrolyte (S-SSE) precursor solution in the cell core, the S-SSE precursor solution comprises a sulfide solid electrolyte and a solvent. The method further comprises evaporating the solvent from the cell core to dry the cell core to solidify the sulfide-based solid-state electrolyte within the cell core and pressurizing the cell core to densify the solid sulfide-base electrolyte within the cell core. The cell core is then fully sealed.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: January 4, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Zhe Li, Xiaochao Que, Haijing Liu, Yong Lu, Mark W. Verbrugge, Meiyuan Wu
  • Publication number: 20210151260
    Abstract: A capacitor-assisted electrode for an electrochemical cell that cycles lithium ions is provided. The capacitor-assisted electrode may include at least two electroactive materials disposed on one or more surfaces of a current collector. A first electroactive material of the at least two electroactive materials may have a first reversible specific capacity and forms a first electroactive material having a first press density. A second electroactive material of the at least two electroactive materials has a second reversible specific capacity and forms a second electroactive material having a second press density. The second reversible specific capacity may be different from the first reversible specific capacity. The second press density may be different from the first press density. One or more capacitor materials may be disposed on or intermingled with one or more of the at least two electroactive materials.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 20, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Xiaochao QUE, Meiyuan WU, Si CHEN, Haijing LIU, Mark W. VERBRUGGE
  • Publication number: 20210151809
    Abstract: A capacitor-assisted battery module includes a housing, a positive terminal, a negative terminal, one or more capacitor-assisted battery cells and one or more first switches. The one or more capacitor-assisted battery cells are disposed in the housing and include one or more battery terminals and one or more capacitor terminals. The one or more battery terminals are connected to battery electrodes. The one or more capacitor terminals are connected to capacitor electrodes. At least one of the one or more battery terminals and the capacitor terminals is connected to the negative terminal. One or more first switches is configured to connect the one or more capacitor terminals to the positive terminal. An overall voltage of the capacitor assisted battery module is measured across the positive terminal and the negative terminal.
    Type: Application
    Filed: February 3, 2020
    Publication date: May 20, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Xiaochao QUE, Dave G. RICH, Si CHEN, Meiyuan WU, Haijing LIU