公开(公告)号：US20220181629A1

公开(公告)日：2022-06-09

申请号：US17542147

申请日：2021-12-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong Lu ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/62

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.

公开(公告)号：US11145922B2

公开(公告)日：2021-10-12

申请号：US16684070

申请日：2019-11-14

Applicant: GM Global Technology Operations LLC

Inventor： Zhe Li ,  Xiaochao Que ,  Haijing Liu ,  Qili Su ,  Yong Lu

IPC: H01M4/02 ,  H01M16/00 ,  H01M10/0525 ,  H01M10/0566 ,  H01G11/08 ,  H01G11/10 ,  H01G11/56 ,  H01G11/50 ,  H01G11/06 ,  H01G11/46 ,  H01G11/36

Abstract: A solid-state battery cell having a capacitor interlayer is disclosed. The solid-state battery includes an anode, a cathode spaced from the anode, a solid-state electrolyte layer disposed between the anode and the cathode, and a capacitor assisted interlayer sandwiched between at least one of (i) the anode and solid-state electrolyte layer, and (ii) the cathode and the solid-state electrolyte layer. The capacitor assisted interlayer comprise at least one of a polymer-based material, an inorganic material, and a polymer-inorganic hybrid material; and a capacitor anode active material or a capacitor cathode active material. The polymer-based material includes at least one of a poly(ethylene glycol) methylether acrylate with Al2O3 and LiTFSI, a polyethylene oxide (PEO) with LiTFSI, and a poly(vinylidene fluoride) copolymer with hexafluoropropylene (PVDF-HFP)-based gel electrolyte. The inorganic material includes a 70% Li2S-29% P2S5-1% P2O5. The polymer-inorganic hybrid material includes a mixture of PEO, LiTFSI, and 75% Li2S-24% P2S5-1% P2O5 (LPOS).

公开(公告)号：US11121375B2

公开(公告)日：2021-09-14

申请号：US16159799

申请日：2018-10-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Zhe Li ,  Dewen Kong ,  Haijing Liu ,  Qili Su

IPC: H01M4/62 ,  H01M4/485 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/40

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.

公开(公告)号：US11095004B2

公开(公告)日：2021-08-17

申请号：US15943065

申请日：2018-04-02

Applicant: GM Global Technology Operations LLC

Inventor： Wu Tao ,  Li Sun ,  Xiaochao Que ,  Haijing Liu ,  Teresa J. Rinker ,  Jeffrey A. Abell

IPC: H01M50/531 ,  B23K26/00 ,  B23K26/22 ,  B23K26/32 ,  H01M10/0525

Abstract: A method for laser welding a plurality of battery foils to a battery tab that does not include ultrasonic welding and includes clamping the plurality of battery foils and the battery tab together. Each of the plurality of battery foils has a thickness that is between 0.004 millimeters and 0.03 millimeters. The battery tab has a thickness that is between 0.1 millimeters and 0.5 millimeters. The method further includes laser welding the plurality of battery foils to the battery tab.

公开(公告)号：US10601046B2

公开(公告)日：2020-03-24

申请号：US15761877

申请日：2015-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Haijing Liu

IPC: H01M4/60 ,  H01M10/0525 ,  C09C1/36 ,  C07F7/00 ,  C01G23/00 ,  H01M4/485

Abstract: Lithium titanate, Li4Ti5O12, particles containing surface hydroxyl groups are susceptible to unwanted gas generation (such as hydrogen) in the presence of water contamination when the particles are used as active anode electrode material in lithium-ion cells operating with an anhydrous liquid electrolyte. In accordance with this disclosure, the hydroxyl groups on the surfaces of the particles are reacted with one of a group of selected agents containing organic alkoxy groups to form hydrophobic moieties on the surfaces of the particles which effectively block water molecules from the surfaces of lithium titanate particles in the anode of the cell.

公开(公告)号：US10597783B2

公开(公告)日：2020-03-24

申请号：US15471029

申请日：2017-03-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Zhiqiang Yu ,  Xiaochao Que

IPC: H01M4/80 ,  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：US20180342722A1

公开(公告)日：2018-11-29

申请号：US15604759

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sherman Zeng ,  Xiaochao Que ,  Haijing Liu

IPC: H01M2/26 ,  H01M2/20 ,  H01M2/30 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0585

CPC classification number: H01M2/26 ,  H01M2/206 ,  H01M2/305 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/20

Abstract: Lithium battery cells, and battery packs comprising the same, include an electrolyte, and an anode and a cathode, each of which include a current collector having a length, the length defining a first end and a second end, a width, a host or active material disposed on the current collector between the first end and the second end, a first tab extending from the first end, and a second tab extending from the second end. A plurality of cells can be stacked in a planar configuration, and a plurality of anode first tabs, a plurality of anode second tabs, a plurality of cathode first tabs, and a plurality of cathode second tabs can each be electrically connected via a respective busbar. The anode and cathode can have a length:width ratio of at least three, or 2.5 to 10. The battery cell can be a power source for an electric/hybrid vehicle.

公开(公告)号：US09937481B1

公开(公告)日：2018-04-10

申请号：US15405364

申请日：2017-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Meiyuan Wu ,  Zhiqiang Yu ,  Xiusheng Zhang

IPC: B01J19/24 ,  H01G13/04 ,  H01M4/23 ,  F26B21/14 ,  H01M10/42

CPC classification number: B01J19/24 ,  B01J2219/24 ,  F26B21/14 ,  H01G13/04 ,  H01M4/23 ,  H01M10/4207

Abstract: A reaction vessel in the form of a box is sized to closely contain electrode elements or core cell elements of a lithium-based or sodium-based battery or capacitor for contacting of the electrode material, placed in the reaction vessel, with a flowing gaseous stream of an inert carrier gas and vapor of an organic solvent of water for removing residual water from the porous electrode material elements which are to be infiltrated with a non-aqueous electrolyte solution. Complementary equipment is provided for delivering the gaseous stream to the reaction vessel with predetermined portions of carrier gas and organic vapor at a predetermined temperature, pressure, and flow rate.

公开(公告)号：US20170058389A1

公开(公告)日：2017-03-02

申请号：US15308860

申请日：2014-05-12

Applicant: Jianyong LIU ,  GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaohong Q. Gayden ,  Jianyong Liu ,  Zhiqiang Yu ,  Haijing Liu ,  Qiang Wu

IPC: C23C4/134 ,  H01M10/0525 ,  C23C4/11 ,  H01M4/04 ,  H01M4/62 ,  H01M4/133 ,  H01M4/134 ,  H01M4/131 ,  C23C4/06 ,  H01M4/66

CPC classification number: C23C4/134 ,  C23C4/01 ,  C23C4/06 ,  C23C4/11 ,  H01M4/0404 ,  H01M4/0407 ,  H01M4/0419 ,  H01M4/0421 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/364 ,  H01M4/621 ,  H01M4/626 ,  H01M4/661 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/20

Abstract: A first atmospheric plasma producing nozzle is used to direct a gas-borne stream of plasma heated and activated particles of lithium battery electrode material for deposition on a surface of lithium cell member, such as a separator or current collector foil. A second atmospheric plasma producing nozzle is used to direct a gas-borne stream of plasma heated and activated metal particles at the same surface area being coated with the stream of electrode material particles. The two plasma streams are combined at the cell member surface to form a layer of electrically-conductive metal-bonded particles of electrode material. The use of multiple atmospheric plasma streams is useful in making thin, efficient, and lower cost electrode structures for lithium batteries.

Abstract translation: 第一大气等离子体产生喷嘴用于引导锂离子电池电极材料的等离子体加热和活化的颗粒的气体流，以便沉积在诸如隔膜或集电箔之类的锂电池构件的表面上。 使用第二大气等离子体产生喷嘴来引导等离子体加热和活化的金属颗粒的气体流在被电极材料颗粒流涂覆的相​​同表面区域。 两个等离子体流在电池元件表面处组合以形成电极材料的导电金属键合颗粒层。 使用多个大气等离子体流可用于制造用于锂电池的薄的，有效的和较低成本的电极结构。

公开(公告)号：US20250149630A1

公开(公告)日：2025-05-08

申请号：US18914838

申请日：2024-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe Li ,  Qili Su ,  Haijing Liu

IPC: H01M10/0565 ,  H01M4/02 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/411

Abstract: A battery cell includes A anode electrodes, C cathode electrodes, and S separators arranged between the A anode electrodes and the C cathode electrodes, where A, C, and S are integers greater than one. The S separators include a composite gel membrane that is cured in-situ using ultraviolet light and includes a polymer, a solid electrolyte comprising greater than 20 wt % of the composite gel membrane, an initiator, and a liquid electrolyte.