公开(公告)号：US11936030B2

公开(公告)日：2024-03-19

申请号：US17539811

申请日：2021-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Haijing Liu ,  Xiaosong Huang ,  Mark W. Verbrugge

IPC: H01M4/04 ,  H01M4/1397 ,  H01M4/30 ,  H01M10/058 ,  H01M10/0525

CPC classification number: H01M4/0435 ,  H01M4/0404 ,  H01M4/1397 ,  H01M4/30 ,  H01M10/058 ,  H01M10/0525

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.

公开(公告)号：US20230290953A1

公开(公告)日：2023-09-14

申请号：US17737084

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Meiyuan Wu ,  Si Chen ,  Haijing Liu

IPC: H01M4/62

CPC classification number: H01M4/625 ,  H01M2004/021

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.

公开(公告)号：US20230290922A1

公开(公告)日：2023-09-14

申请号：US17737089

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M4/04 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/0404 ,  H01M4/366 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/021

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.

公开(公告)号：US11651906B2

公开(公告)日：2023-05-16

申请号：US17069932

申请日：2020-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Haijing Liu ,  Meiyuan Wu ,  Dewen Kong ,  Mengyan Hou

IPC: H01G11/08 ,  H01G11/32 ,  H01G11/46 ,  H01G11/04

CPC classification number: H01G11/08 ,  H01G11/04 ,  H01G11/32 ,  H01G11/46

Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes. In a first operational state corresponding to charging, the at least one voltage modification component is configured to induce a voltage drop corresponding to the predetermined voltage difference providing high power density and high energy density hybrid lithium-ion electrochemical cells.

公开(公告)号：US11295901B2

公开(公告)日：2022-04-05

申请号：US16541811

申请日：2019-08-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Mark W. Verbrugge ,  Xiaochao Que ,  Qili Su ,  Meiyuan Wu

IPC: H01G9/00 ,  H01G9/022 ,  H01G11/06 ,  G02F1/1523 ,  H01M10/0525 ,  H01G11/24 ,  H01G11/02

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. A method for manufacturing the disclosed bipolar capacitor-assisted solid-state battery is also disclosed.

公开(公告)号：US20210050157A1

公开(公告)日：2021-02-18

申请号：US16541811

申请日：2019-08-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Mark W. Verbrugge ,  Xiaochao Que ,  Qili Su ,  Meiyuan Wu

IPC: H01G9/022 ,  H01G9/00 ,  H01G11/06 ,  H01G11/24 ,  G02F1/1523 ,  H01M10/0525

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. A method for manufacturing the disclosed bipolar capacitor-assisted solid-state battery is also disclosed.

公开(公告)号：US10461373B2

公开(公告)日：2019-10-29

申请号：US15355101

申请日：2016-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Dewen Kong ,  Meiyuan Wu

IPC: H01M10/42 ,  H01M4/62 ,  H01M10/0567 ,  H01G11/06 ,  H01G11/46 ,  H01G11/86 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/13 ,  H01M4/131 ,  H01M10/054

Abstract: An assembled electrochemical cell is formed comprising an anode containing sub-micrometer and micrometer-size particles of an anode material for cyclically intercalating and de-intercalating lithium ions or sodium ions, a cathode containing like-sized particles of a cathode material for intercalating and de-intercalating the ions utilized in the anode, and a non-aqueous electrolyte composed for transporting ions between the anode and cathode. Nanometer-size particles of a basic metal oxide or a metal nitride are mixed with at least one of (i) the particles of electrode material for at least one of the anode and cathode and (ii) the electrolyte. The composition and the amount of the metal oxide or metal nitride is determined for chemically neutralizing acidic contaminants formed in the operation of the electrochemical cell, adsorbing incidental water, and to generally prevent degradation of the respective electrode materials.

公开(公告)号：US20180337391A1

公开(公告)日：2018-11-22

申请号：US15598930

申请日：2017-05-18

Applicant: GM Global Technology Operations LLC

Inventor： Zhiqiang Yu ,  Meiyuan Wu ,  Jim Gu ,  Xiaochao Que

IPC: H01M4/04 ,  H01M10/0525

Abstract: A method of making a patterned electrode material is provided. The method includes disposing a first mask having a first pattern on a first surface of an electrode material, disposing a second mask having a second pattern on an opposing second surface of the electrode material, applying pressure through both the first mask and the second mask towards the electrode material, wherein the first pattern of the first mask is engraved into the first surface of the electrode material and the second pattern of the second mask is engraved into the second surface of the electrode material, and removing the first mask and the second mask form the electrode material to from the patterned electrode material.

公开(公告)号：US20250149576A1

公开(公告)日：2025-05-08

申请号：US18522539

申请日：2023-11-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xin ZHANG ,  Dewen Kong ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/58 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/429 ,  H01M50/451 ,  H01M50/491

Abstract: A battery cell includes A anode electrodes including an anode active material layer comprising lithium metal active material and an anode current collector, C cathode electrodes including a cathode active material layer comprising LiFePO4 (LFP) active material and a cathode current collector, 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 comprise a substrate including a coating layer.

公开(公告)号：US20250149546A1

公开(公告)日：2025-05-08

申请号：US18654585

申请日：2024-05-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Qili Su ,  Yong Lu ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0562

Abstract: A battery cell includes C cathode electrodes including a cathode active material layer arranged on a cathode current collector, A anode electrodes including an anode active material layer arranged on an anode current collector, and S separators, where A, C and S are integers greater than one. The anode active material layer comprises silicon and a metal that are co-sputtered. The metal is different than the silicon.