公开(公告)号：US12272788B2

公开(公告)日：2025-04-08

申请号：US17542299

申请日：2021-12-03

Applicant: GM Global Technology Operations LLC

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

IPC: H01M10/0565 ,  H01M10/0585 ,  H01M4/02

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.

公开(公告)号：US20250079660A1

公开(公告)日：2025-03-06

申请号：US18461792

申请日：2023-09-06

Applicant: GM Global Technology Operations LLC

Inventor： Jing Gao ,  Anne Zhang ,  Brian J. Koch ,  Xingcheng Xiao ,  Zhe Li

IPC: H01M50/569 ,  B60L50/64 ,  G01K1/02 ,  G01K3/02 ,  H01M10/48

Abstract: A battery includes multiple stacked cells. Each cell includes an anode layer and a cathode layer separated by a permeable separator. At least one temperature probe structure is disposed on the permeable separator between the anode layer and the cathode layer of a first cell of the stacked cells. The temperature probe structure includes at least a first material partially coating the permeable separator and a second material partially coating the permeable separator. The first material overlaps with the second material at an overlap region. A first sensor output terminal is connected to the first material and a second sensor terminal is connected to the second material. A voltage differential between the first sensor output terminal and the second sensor output terminal corresponds to an average temperature of the overlap region.

公开(公告)号：US20250062327A1

公开(公告)日：2025-02-20

申请号：US18476826

申请日：2023-09-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/44

Abstract: Lithium-ion batteries are provided that include a columnar silicon anode including a carbon fiber network on exposed surfaces of the columnar silicon anode. The columnar silicon is formed by plasma vapor deposition. Also disclosed are processes for forming the carbon fiber network, which generally includes spraying a dilute carbon fiber precursor solution including carbon nanotubes, an optional polymeric dispersing agent and a solvent, which is then subjected to facile evaporation at an elevated temperature to remove the solvent and form the carbon fiber network. The carbon fiber network is uniformly and multi-directionally provided on the exposed surfaces of the columnar silicon anode. The presence of the carbon fiber network provides high electronic pathways to enhance battery power capability especially at the higher current rates.

公开(公告)号：US12176510B2

公开(公告)日：2024-12-24

申请号：US17542974

申请日：2021-12-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan Liu ,  Dewen Kong ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M16/00 ,  H01G11/08 ,  H01G11/28 ,  H01G11/52 ,  H01G11/56 ,  H01G11/58 ,  H01M10/0525 ,  H01M50/51

Abstract: A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

公开(公告)号：US20240283009A1

公开(公告)日：2024-08-22

申请号：US18359466

申请日：2023-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe Li ,  Meiyuan Wu ,  Dave G. Rich ,  Yong Lu ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H01M10/0562 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M10/0562 ,  H01M4/0435 ,  H01M4/623 ,  H01M4/625

Abstract: A method for preparing an electrolyte layer supported by a dry process electrode layer, the method includes providing a sulfide electrolyte layer; providing a first dry process electrode layer; arranging a first side of the sulfide electrolyte layer adjacent to a first side of the first dry process electrode layer; and calendaring the sulfide electrolyte layer and the first dry process electrode layer to reduce a thickness of the sulfide electrolyte layer to a predetermined thickness in a range from approximately 5 micrometers (μm) to approximately 50 μm.

公开(公告)号：US20240282970A1

公开(公告)日：2024-08-22

申请号：US18336221

申请日：2023-06-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe Li ,  Yong Lu ,  Haijing Liu ,  Dave G. Rich

IPC: H01M4/62 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0565

CPC classification number: H01M4/625 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/366 ,  H01M4/386 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5815 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0565 ,  H01M2300/0085

Abstract: An electrode for a lithium-ion battery cell includes a first region having a first thickness and including an active material comprising a first wt % of the first region and a solid electrolyte comprising a second wt % of the first region. A second region has a second thickness and includes the active material comprising a third wt % of the second region and the solid electrolyte comprising a fourth wt % of the second region. The first region and the second region are arranged adjacent to one another. The first wt % is greater than the third wt % and the second wt % is less than the fourth wt %.

公开(公告)号：US20240243436A1

公开(公告)日：2024-07-18

申请号：US18098392

申请日：2023-01-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Li ,  Xingcheng Xiao ,  Jing Gao

IPC: H01M50/457 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/42 ,  H01M50/403 ,  H01M50/426 ,  H01M50/431 ,  H01M50/446 ,  H01M50/451 ,  H01M50/491 ,  H10N30/20 ,  H10N30/85

CPC classification number: H01M50/457 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/4235 ,  H01M50/403 ,  H01M50/426 ,  H01M50/431 ,  H01M50/446 ,  H01M50/451 ,  H01M50/491 ,  H10N30/206 ,  H10N30/852 ,  H01M2220/20 ,  H01M2300/0068

Abstract: A self-protecting functional separator for a battery cell is provided. The self-protecting functional separator includes a polymer substrate including a first primary surface and a second primary surface. The self-protecting functional separator further includes a functional layer applied to the first primary surface. The functional layer including a mixture includes a first piezoelectric material including a single crystal-type material and a second piezoelectric material.

公开(公告)号：US11942620B2

公开(公告)日：2024-03-26

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

CPC classification number: H01M4/0416 ,  H01M2300/0068

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：US11710864B2

公开(公告)日：2023-07-25

申请号：US17752180

申请日：2022-05-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jing Gao ,  Brian J. Koch ,  Zhe Li ,  Alfred Zhang ,  Gayatri V. Dadheech

IPC: H01M10/48 ,  B05D1/00

CPC classification number: H01M10/48 ,  B05D1/005

Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.

公开(公告)号：US20230063684A1

公开(公告)日：2023-03-02

申请号：US17458903

申请日：2021-08-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Li ,  Yong Lu ,  Haijing Liu ,  Qili Su ,  Xiaochao Que ,  Mark W. Verbrugge

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: An anode-free solid-state battery includes a cathode layer having transient anode elements and a bare current collector devoid of non-transitory anode material and configured to accept thereon the transient anode elements. The battery also includes a solid-state electrolyte layer defining voids and arranged between the current collector and the cathode layer. The battery additionally includes a gel situated within the solid-state electrolyte and cathode layers, to permeate the electrolyte voids and form a gelled solid-state electrolyte layer, coat the cathode layer, and facilitate ionic conduction of the anode elements between the cathode layer, the solid-state electrolyte layer, and the current collector. Charging the battery diffuses the anode elements from the cathode layer, via the gelled solid-state electrolyte layer, onto the current collector. Discharging the battery returns the anode elements, via the gelled solid-state electrolyte layer, to the cathode layer. A particular method is used to fabricate the anode-free solid-state battery.