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: 20240055593
    Abstract: The present disclosure provides an electrochemical device that cycles lithium ions. The electrochemical device includes at least one first cell unit and at least one second cell unit. The at least one first cell unit includes a nickel-rich positive electroactive material. The nickel-rich positive electroactive material can be represented by: LiM1xM2yM3zM4(1-x-y-z)O2 where M1, M2, M3, and M4 are each a transition metal independently selected from the group consisting of: nickel, manganese, cobalt, aluminum, and combinations thereof, where 0?x?1, 0?y?1, and 0?z?1. The at least one second cell unit includes a phosphate-based positive electroactive material. The phosphate-based electroactive material can be selected from the group consisting of: lithium manganese iron phosphates (LiMnxFe1-xPO4, where 0?x?1) (LMFP), lithium vanadium oxygen phosphates (LixVOPO4, where 0?x?1), lithium vanadium phosphates, lithium vanadium fluorophosphates, and combinations thereof.
    Type: Application
    Filed: November 3, 2022
    Publication date: February 15, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Haijing LIU, Jingyuan LIU, Meiyuan WU, Dewen KONG
  • Publication number: 20240038998
    Abstract: A battery cell includes a plurality of cathodes and a plurality of anodes. A plurality of solid electrolyte layers are arranged between first adjacent ones of the plurality of cathodes and the plurality of anodes. A plurality of clad current collectors are arranged between second adjacent ones of the plurality of cathodes and the plurality of anodes. The plurality of clad current collector includes a first foil layer, a second foil layer and a thermal interface layer including adhesive and at least one material that increases thermal and electrical conductivity of the thermal interface layer.
    Type: Application
    Filed: August 16, 2022
    Publication date: February 1, 2024
    Inventors: Zhe LI, Dave G. RICH, Meiyuan WU, Jingyuan LIU, Haijing LIU
  • Publication number: 20240038996
    Abstract: A method of making a capacitor-assisted hybrid electrode for a lithium-ion electrochemical cell includes admixing a solvent, a cellulose-based dispersant, and a plurality of capacitive particles comprising carbon to form a dispersion. The cellulose-based dispersant forms hydrogen bonds with one or more carbonyl-groups on the capacitive particles comprising carbon. The dispersion is combined with an electroactive material, an electrically conductive material, and a binder to form a slurry. The slurry is applied to a current collector and solidified to form the capacitor-assisted hybrid electrode having a composite hybrid active layer on the current collector. Capacitor-assisted hybrid electrodes formed from such methods are also provided.
    Type: Application
    Filed: September 22, 2022
    Publication date: February 1, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Meiyuan WU, Si CHEN, Haijing LIU
  • Publication number: 20240030552
    Abstract: An electrode assembly for an electrochemical cell that cycles lithium ions is provided. The electrode assembly includes one or more electroactive material layers including a plurality of electroactive material particles and a plurality of binder material fibers dispersed with the electroactive material particles. At least one electroactive material particle of the plurality may have a first protective layer coated thereon, and at least one binder material fiber of the plurality may have a second protective layer coated thereon. The first and second protective layers may be the same or different. The binder material fibers can include polytetrafluoroethylene (PTFE).
    Type: Application
    Filed: September 15, 2022
    Publication date: January 25, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20240021865
    Abstract: An electrochemical cell that includes a first electrode, a second electrode, and an electrolyte layer that is disposed between the first electrode and the second electrode is provided. The electrolyte layer includes a porous scaffold having a porosity greater than or equal to about 50 vol. % to less than or equal to about 90 vol. %, and a solution-processable solid-state electrolyte that at least partially fills the pores of the porous scaffold. The porous scaffold is defined by a plurality of fibers having an average diameter greater than or equal to about 0.01 micrometer to less than or equal to about 10 micrometers and an average length greater than or equal to about 1 micrometer to less than or equal to about 20 micrometers. The solution-processable solid-state electrolyte includes is selected from the group consisting of: sulfide-based solid-state particles, halide-based solid-state particles, hydride-based solid-state particles, and combinations thereof.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 18, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Meiyuan WU, Qili SU, Yong LU, Haijing LIU
  • Publication number: 20230402585
    Abstract: A hybridized lithium-ion battery that includes one or more positive electrode assemblies is provided. Each of the one or more positive electrode assemblies includes a positive electrode current collector and one or more positive electroactive material layers disposed on one or more surfaces of the positive electrode current collector. The hybridized lithium-ion battery also includes two or more negative electrode current collectors, and one or more negative electroactive material layers disposed on one or more surfaces of at least one of the two or more negative electrode current collectors, where a total number of the one or more positive electroactive material layers is greater than a total number of negative electroactive material layers. The hybridized lithium-ion battery also includes two or more separating layers physically separating the positive electrode assemblies and the negative electroactive material layers or the positive electrode assemblies and the negative electrode current collectors.
    Type: Application
    Filed: August 2, 2022
    Publication date: December 14, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Zhe LI, Meiyuan WU, Haijing LIU
  • Publication number: 20230378610
    Abstract: A polymer blocker for use in an electrochemical battery that cycles lithium ions is provided. The polymer blocker includes a polymeric layer, a first adhesive layer that includes a first adhesive and is disposed on or near a first surface of the polymeric layer, and a second adhesive layer that includes a second adhesive and is disposed on or near a second surface of the polymeric layer. The polymeric layer has a porosity greater than or equal to about 50 vol. % to less than or equal to about 95 vol. %. A portion of the first adhesive impregnates a first portion of the polymeric layer, and a portion of the second adhesive impregnating a second portion of the polymeric layer. The first and second portions of the polymeric layer may be the same or different.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 23, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Meiyuan WU, Yong LU, Haijing LIU
  • Publication number: 20230344000
    Abstract: Methods of forming a battery via in situ polymerization are provided. A precursor of a first blocker composition is applied to select edge regions of at least one bipolar electrode and terminal negative and positive electrodes. The components are assembled to form a stack with at least two insulating interlayers disposed between electrodes of opposite polarities. The precursor is reacted to form a first blocker composition sealing three sides of the stack to define a fillable interior region. Next, a polymer electrolyte precursor is injected into the fillable interior region. A precursor of a second blocker composition is applied to a terminal region of the fourth side of the stack. The precursors are concurrently reacted to form a polymer electrolyte and a second blocker composition along the fourth side. The first and second blocker compositions define a sealed pouch including the stack comprising the polymer electrolyte.
    Type: Application
    Filed: August 9, 2022
    Publication date: October 26, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Zhe LI, Meiyuan WU, Haijing LIU
  • Patent number: 11784010
    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: Grant
    Filed: November 15, 2019
    Date of Patent: October 10, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen Kong, Xiaochao Que, Meiyuan Wu, Si Chen, Haijing Liu, Mark W Verbrugge
  • Publication number: 20230317966
    Abstract: An electrochemical cell that cycles lithium ions includes a positive electrode, a negative electrode current collector spaced apart from the positive electrode, and an ionically conductive electrolyte disposed between the positive electrode and the negative electrode current collector. The negative electrode current collector is of unitary one-piece construction and has a three-dimensional porous structure that defines an interconnected network of open pores. During charging of the electrochemical cell, lithium metal is deposited within the open pores of the negative electrode current collector.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 5, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qi LU, Yong LU, Meiyuan WU, Qili SU, Haijing LIU
  • Publication number: 20230307655
    Abstract: A negative electrode for an electrochemical cell that cycles lithium ions includes a particulate component embedded in a polymeric matrix component that comprises polytetrafluoroethylene. The particulate component includes a plurality of composite particles, with each of the composite particles having a core and a selective barrier layer disposed on a surface of the core. The core of each of the composite particles includes an electroactive negative electrode material. The selective barrier layer of each of the composite particles is formulated to prevent or inhibit electrochemical reactions from occurring between lithium stored in the electroactive negative electrode material of the core and the polytetrafluoroethylene in the polymeric matrix component.
    Type: Application
    Filed: May 6, 2022
    Publication date: September 28, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen KONG, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20230299342
    Abstract: A free-standing electrolyte layer for use in an electrochemical cell is provided. The free-standing electrolyte layer includes a plurality of solid-state electrolyte particles, a (first) ionic liquid that surrounds each solid-state electrolyte particle of the plurality of solid-state electrolyte particles, and a plurality of polytetrafluoroethylene fibrils that provides a structural framework for the solid-state electrolyte particles. The free-standing electrolyte layer has an ionic conductivity greater than or equal to about 0.1 mS/cm at 40° C., and a thickness greater than or equal to about 5 micrometers to less than or equal to about 500 micrometers. Each of the polytetrafluoroethylene fibrils of the plurality of polytetrafluoroethylene fibrils has an average length of greater than or equal to about 2 micrometers to less than or equal to about 100 micrometers.
    Type: Application
    Filed: August 9, 2022
    Publication date: September 21, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Yong LU, Meiyuan WU, Haijing LIU
  • Publication number: 20230290922
    Abstract: A battery system includes a battery cell, which includes an anode including a first current collector and an anode layer disposed on the first collector and including an anode active material. The cell includes a cathode including a second current collector and a cathode layer disposed on the second collector and including a cathode active material. The cell includes a solid-state electrolyte including one of a reduction tolerable solid electrolyte disposed in contact with the anode and an oxidation tolerable solid electrolyte disposed in contact with the cathode. The reduction tolerable solid electrolyte is present in an amount of from 0.1 part by weight to 5 parts by weight based upon 100 parts by weight of the anode layer. The oxidation tolerable solid electrolyte is present in an amount of from 1 part by weight to 10 parts by weight based upon 100 parts by weight of the cathode layer.
    Type: Application
    Filed: May 5, 2022
    Publication date: September 14, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong Lu, Zhe Li, Meiyuan Wu, Haijing Liu
  • Publication number: 20230290953
    Abstract: An active material component of a composition for forming an electrode of a battery in a dry process is provided. The active material component includes a dry powder including a plurality of grains of an active material. The active material component further includes an electrically conductive filler material attached to each of the plurality of grains.
    Type: Application
    Filed: May 5, 2022
    Publication date: September 14, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen Kong, Meiyuan Wu, Si Chen, Haijing Liu
  • Publication number: 20230261246
    Abstract: A battery system comprises N folded bipolar batteries folded in an “S”-shaped configuration. First and second folded portions of each of the N folded bipolar batteries are arranged on opposite ends of the “S”-shaped configuration. First side portions and second side portions of each of the N folded bipolar batteries are arranged between the first and second folded portions. One or more of the first folded portions on a first one of the N folded bipolar batteries are in direct electrical contact with one or more of the second folded portions on a second one of the N folded bipolar batteries. One or more of the first side portions on a third one of the N folded bipolar batteries are in direct electrical contact with one or more of the second side portions on a fourth one of the N folded bipolar batteries.
    Type: Application
    Filed: August 12, 2022
    Publication date: August 17, 2023
    Inventors: Qili SU, Zhe LI, Jingyuan LIU, Meiyuan WU, Haijing LIU
  • Publication number: 20230261172
    Abstract: A solid-state battery system including a graphite anode is provided. The system includes a battery cell. The battery cell includes the graphite anode, a cathode, and a solid electrolyte layer. The graphite anode includes a plurality of graphite particles, wherein the plurality of graphite particles includes a first portion of the plurality of graphite particles including a plurality of relatively high specific surface area graphite particles and a second portion of the plurality of graphite particles including a plurality of relatively low specific surface area graphite particles. The solid electrolyte layer is disposed between the graphite anode and the cathode and is operable to provide lithium-ion conduction path between the graphite anode and the cathode.
    Type: Application
    Filed: June 28, 2022
    Publication date: August 17, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe Li, Qili Su, Yong Lu, Meiyuan Wu, Haijing Liu
  • Publication number: 20230253618
    Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes one or more lithium salts, a plasticizer component, an additive component, and a polymeric host. Examples of the plasticizer component include a carbonate, a lactone, a nitrile, a sulfone, an ether, a phosphate, and combinations thereof. The additive component includes a boron-containing additive and a carbonate-containing additive.
    Type: Application
    Filed: August 9, 2022
    Publication date: August 10, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Meiyuan WU, Haijing LIU
  • Publication number: 20230253617
    Abstract: A polymeric gel electrolyte for an electrochemical cell, such as a solid-state battery, is provided herein as well an electrochemical cell including the polymeric gel electrolyte. The polymeric gel electrolyte includes one or more lithium salts, a plasticizer component, an additive component, and a polymeric host. Examples of the plasticizer component include a carbonate, a lactone, a nitrile, a sulfone, an ether, a phosphate, and combinations thereof. The additive component includes a boron-containing additive and a carbonate-containing additive.
    Type: Application
    Filed: August 9, 2022
    Publication date: August 10, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhe LI, Qili SU, Meiyuan WU, Haijing LIU
  • Patent number: 11721843
    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: Grant
    Filed: February 3, 2020
    Date of Patent: August 8, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dewen Kong, Xiaochao Que, Dave G. Rich, Si Chen, Meiyuan Wu, Haijing Liu
  • Publication number: 20230246310
    Abstract: A high-power gel-assisted battery stack that cycles lithium ions is provided with two terminal electrodes having opposite polarities and at least one bipolar electrode assembly disposed therebetween. A first electrode is disposed on a first side of a bipolar current collector and a second electrode with an opposite polarity to the first electrode is disposed on a second side of the bipolar current collector. Each electrode includes a porous layer having an electroactive material and a solid-state electrolyte disposed in a polymeric binder. A polymer gel electrolyte is distributed in pores of the porous. The stack also includes at least two free-standing gel separator layers each being disposed between the at least one bipolar electrode assembly and terminal electrodes. Each respective free-standing gel separator layer comprises polyacrylonitrile (PAN) and an electrolyte distributed therein. The high-power gel-assisted battery stack has a maximum voltage rating of ?about 12V.
    Type: Application
    Filed: March 16, 2022
    Publication date: August 3, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yong LU, Zhe LI, Mengyan HOU, Qili SU, Meiyuan WU, Xiaochao QUE, Haijing LIU, Si CHEN