公开(公告)号：US20210135224A1

公开(公告)日：2021-05-06

申请号：US17084782

申请日：2020-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan HOU ,  Haijing LIU ,  Qili SU ,  Xiaochao QUE

IPC: H01M4/62 ,  H01M2/26

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. The first and second electrical configurations are the same and the third electrical configuration is distinct from the first and second electrical configurations.

公开(公告)号：US20210111426A1

公开(公告)日：2021-04-15

申请号：US16786469

申请日：2020-02-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Yong LU ,  Xiaochao QUE ,  Haijing LIU

IPC: H01M10/0562 ,  H01M10/0525

Abstract: The present disclosure relates to solid-state electrolytes and methods of making the same. The method includes admixing a sulfate precursor including one or more of Li2SO4 and Li2SO4.H2O with one or more carbonaceous capacitor materials. The first admixture is calcined to form an electrolyte precursor that is admixed with one or more additional components to form the solid-state electrolyte. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is about 1:2, the electrolyte precursor consists essentially of Li2S. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is less than about 1:2, the electrolyte precursor is a composite precursor including a solid-state capacitor cluster including the one or more carbonaceous capacitor materials and a sulfide coating including Li2S disposed on one or more exposed surfaces of the solid-state capacitor cluster.

公开(公告)号：US20200173028A1

公开(公告)日：2020-06-04

申请号：US16783240

申请日：2020-02-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing LIU ,  Zhiqiang YU ,  Xiaochao QUE

IPC: C23C18/12 ,  H01M4/66 ,  H01M4/04 ,  C23C22/00

Abstract: A copper foil, intended for use as a current collector in a lithium-containing electrode for a lithium-based electrochemical cell, is subjected to a series of chemical oxidation and reduction processing steps to form a field of integral copper wires extending outwardly from the surfaces of the current collector (and from the copper content of the foil) to be coated with a resin-bonded porous layer of particles of active electrode material. The copper wires serve to anchor thicker layers of porous electrode material and enhance liquid electrolyte contact with the electrode particles and the current collector to improve the energy output of the cell and its useful life.

公开(公告)号：US20230268547A1

公开(公告)日：2023-08-24

申请号：US17828898

申请日：2022-05-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe LI ,  Xiaochao QUE ,  Haijing LIU

IPC: H01M10/056 ,  H01M10/0525

CPC classification number: H01M10/056 ,  H01M10/0525 ,  H01M2220/20

Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions, where the electrochemical cell includes an electrode, a solid-state electrolyte layer, and a solid-state interlayer disposed between the electrode and the solid-state electrolyte layer. The solid-state interlayer includes a plurality of solid-state electrolyte particles. In certain instances, the solid-state interlayer includes a plurality of through-holes dispersed therewithin. The through-holes have an average diameter between about 0.05 to about 100 micrometers. The solid-state interlay covers between about 50% and about 100% of a total surface area of the electrode. In each variation, solid-state interlayer has a thickness greater than or equal to about 0.1 to less than or equal to about 8 micrometers, and the electrochemical cell may include a polymeric gel electrolyte that at least partially fills voids between solid-state electroactive particle and solid-state electrolyte particles.

公开(公告)号：US20230246310A1

公开(公告)日：2023-08-03

申请号：US17696567

申请日：2022-03-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe LI ,  Mengyan HOU ,  Qili SU ,  Meiyuan WU ,  Xiaochao QUE ,  Haijing LIU ,  Si CHEN

IPC: H01M50/543 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/46 ,  H01M50/449 ,  H01M4/131 ,  H01M4/583

CPC classification number: H01M50/543 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/46 ,  H01M50/449 ,  H01M4/131 ,  H01M4/583 ,  H01M2300/0082 ,  H01M2004/029

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.

公开(公告)号：US20230231110A1

公开(公告)日：2023-07-20

申请号：US17882876

申请日：2022-08-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan HOU ,  Haijing LIU ,  Xiaochao QUE ,  Meiyuan WU

IPC: H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/04

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/0471 ,  H01M4/0416 ,  H01M2004/027

Abstract: Negative electrodes for electrochemical cells that cycle lithium ions are provided. The negative electrodes comprise electroactive material particles that exhibit a core-shell structure defining a core made of a lithiated silicon-based material and a shell surrounding the core that is a bi-layer structure including first and second carbon coating layers. An electrical conductivity of the first carbon coating layer is greater than that of the second carbon coating layer. A method of manufacturing a negative electrode material is provided in which a first carbon coating layer is formed on an outer surface of a silicon-based precursor particle. The silicon-based precursor particle is exposed to a lithium source to form a lithiated silicon-based particle having the first carbon coating layer. A second carbon coating layer is formed on the first carbon coating layer over the lithiated silicon-based particle to form an electroactive material particle.

公开(公告)号：US20220336880A1

公开(公告)日：2022-10-20

申请号：US17854692

申请日：2022-06-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang YU ,  Haijing LIU ,  Xiaochao QUE ,  Dave Gerard RICH ,  Saad HASAN ,  Meiyuan WU

IPC: H01M10/615 ,  H01M4/04 ,  H01M4/66 ,  H01M4/75 ,  H01M4/80 ,  H01M10/0587

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.

公开(公告)号：US20220181598A1

公开(公告)日：2022-06-09

申请号：US17543160

申请日：2021-12-06

Applicant: GM Global Technology Operations LLC

Inventor： Yong LU ,  Zhe LI ,  Xiaochao QUE ,  Haijing LIU ,  Meiyuan WU

IPC: H01M4/04

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.

公开(公告)号：US20210151809A1

公开(公告)日：2021-05-20

申请号：US16779780

申请日：2020-02-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Xiaochao QUE ,  Dave G. RICH ,  Si CHEN ,  Meiyuan WU ,  Haijing LIU

IPC: H01M10/42 ,  H01M2/10 ,  H01M10/0525 ,  H01G11/24 ,  H01M2/20 ,  G01R31/396 ,  H01M2/30 ,  H01G11/46 ,  H01G11/06 ,  G01R31/3835 ,  H01G11/58 ,  H01M10/48

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.

公开(公告)号：US20210151260A1

公开(公告)日：2021-05-20

申请号：US16685389

申请日：2019-11-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Xiaochao QUE ,  Meiyuan WU ,  Si CHEN ,  Haijing LIU ,  Mark W. VERBRUGGE

IPC: H01G11/06 ,  H01G11/34 ,  H01G11/24 ,  H01G11/46 ,  H01G11/72 ,  H01G11/86 ,  H01M10/0525

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.