公开(公告)号：US12113163B2

公开(公告)日：2024-10-08

申请号：US17506446

申请日：2021-10-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ruchira Dharmasena ,  Shuru Chen ,  Fang Dai ,  Mei Cai ,  Sanaz Ketabi

IPC: H01M10/04 ,  H01M10/0525 ,  H01M50/431 ,  H01M50/446

CPC classification number: H01M10/0404 ,  H01M10/0525 ,  H01M50/431 ,  H01M50/446

Abstract: A system for coating a separator for a battery includes a separator feed and collection assembly configured to dispense the separator, a coating distribution device configured to flow a coating material toward the separator, and an electric field generator configured to generate an electric field in a gap between the coating distribution device and the separator.

公开(公告)号：US11984599B2

公开(公告)日：2024-05-14

申请号：US16698303

申请日：2019-11-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Hongliang Wang ,  Shuru Chen ,  Qinglin Zhang ,  Mei Cai

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/62 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/0492 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/382 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/027

Abstract: An electrode component for an electrochemical cell is provided herein. The electrode component includes a current collector having a first surface, a metal oxide layer disposed on the first surface of the current collector, and a lithium-containing layer bonded to the first surface of the current collector. The metal oxide layer includes a plurality of features. A method for manufacturing such an electrode component is also provided herein. The method includes directing a laser beam toward the first surface of the current collector in the presence of oxygen to form the metal oxide layer on the first surface and applying the lithium-containing layer to the metal oxide layer thereby bonding the lithium-containing layer with the current collector.

公开(公告)号：US20230121883A1

公开(公告)日：2023-04-20

申请号：US17506446

申请日：2021-10-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ruchira DHARMASENA ,  Shuru Chen ,  Fang Dai ,  Mei Cai ,  Sanaz Ketabi

IPC: H01M10/04 ,  H01M50/446 ,  H01M50/431 ,  H01M10/0525

Abstract: A system for coating a separator for a battery includes a separator feed and collection assembly configured to dispense the separator, a coating distribution device configured to flow a coating material toward the separator, and an electric field generator configured to generate an electric field in a gap between the coating distribution device and the separator.

公开(公告)号：US11852457B2

公开(公告)日：2023-12-26

申请号：US17556430

申请日：2021-12-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Hongliang Wang ,  Shuru Chen ,  Mei Cai

IPC: G01B11/06 ,  H01M4/02 ,  H01M4/62 ,  H01M10/052 ,  H01M4/38

CPC classification number: G01B11/0641 ,  H01M4/382 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/027 ,  H01M2220/20

Abstract: A system for measuring a thickness of a coating arranged on an anode substrate includes an optical measurement system configured to transmit a light signal having a known first polarization toward the anode substrate through the coating such that the light signal is reflected from the surface of the anode substrate, a detection module positioned to receive the reflected light signal and configured to determine a second polarization of the reflected light signal that is different from the first polarization and measure a polarization difference between the first polarization and the second polarization, and a measurement module configured to receive the measured polarization difference, calculate the thickness of the coating based on the measured polarization difference, and generate an output based on the calculated thickness.

公开(公告)号：US20220320584A1

公开(公告)日：2022-10-06

申请号：US17220058

申请日：2021-04-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Meinan He ,  Mei Cai ,  Shuru Chen

IPC: H01M10/0568 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M10/0567 ,  H01M4/38 ,  H01M4/485 ,  H01M10/0569 ,  H01M4/02

Abstract: An electrolyte for a lithium metal battery including a nonaqueous aprotic organic solvent and a lithium salt dissolved or ionized in the nonaqueous aprotic organic solvent. The nonaqueous aprotic organic solvent includes a cyclic carbonate, an acyclic carbonate, and an acyclic fluorinated ether. The lithium salt includes an aliphatic fluorinated disulfonimide lithium salt.

公开(公告)号：US11342549B2

公开(公告)日：2022-05-24

申请号：US16743650

申请日：2020-01-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shuru Chen ,  Fang Dai ,  Mei Cai

IPC: H01M4/04 ,  H01M4/139 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/62 ,  H01M4/02

Abstract: The present disclosure relates to sulfur-containing electrodes and methods for forming the same. For example, the method may include disposing an electroactive material on or near a current collector to form an electroactive material layer having a first porosity and applying pressure and heat to the electroactive material layer so that the electroactive material layer has a second porosity. The first porosity is greater than the second porosity. The electroactive material may include a plurality of electroactive material particles and one or more salt additives. The method may further include contacting the electroactive material layer and an electrolyte such that the electrolyte dissolves the plurality of one or more salt particles so that the electroactive material layer has a third porosity. The third porosity may be greater than the second porosity and less than the first porosity.

公开(公告)号：US11171359B2

公开(公告)日：2021-11-09

申请号：US16446569

申请日：2019-06-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mei Cai ,  Fang Dai ,  Shuru Chen ,  Biqiong Wang

IPC: H01M10/0565 ,  H01M4/36 ,  H01M10/0525

Abstract: Composite cathode-separator laminations (CSL) include a current collector with sulfur-based host material applied thereto, a coated separator comprising an electrolyte membrane separator with a carbonaceous coating, and a porous, polymer-based interfacial layer (PBIL) forming a binding interface between the carbonaceous coating and the host material. The host material includes less than about 6% polymeric binder, and less than about 40% electrically conductive carbon, with the balance comprising one or more sulfur compounds. The PBIL can have a thickness of less than about 5 μm and a porosity of about 5% to about 40%. The host material can comprise less than about 40% conductive carbon (e.g., graphene) and have a porosity of less than about 40%. The carbonaceous coating (e.g., graphene) can have a thickness of about 1 μm to about 5 μm. The CSL can be disposed with an anode within an electrolyte to form a lithium-sulfur battery cell.

公开(公告)号：US20190207201A1

公开(公告)日：2019-07-04

申请号：US16131853

申请日：2018-09-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Shuru Chen ,  Meinan He ,  Mei Cai

IPC: H01M4/04 ,  H01M10/0585 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/1395

Abstract: In a method of manufacturing an electrochemical cell, a porous or non-porous electrically conductive metal substrate may be provided. A conformal metal chalcogenide layer may be formed on a surface of the metal substrate. The metal substrate with the conformal metal chalcogenide layer may be immersed in a nonaqueous liquid electrolyte solution comprising a lithium salt dissolved in a polar aprotic organic solvent. An electrical potential may be established between the metal substrate and a counter electrode immersed in the nonaqueous liquid electrolyte solution such that lithium ions in the electrolyte solution are reduced to metallic lithium and deposited on the surface of the metal substrate over the metal chalcogenide layer to form a conformal lithium metal layer on the surface of the metal substrate over the metal chalcogenide layer.

公开(公告)号：US11735776B2

公开(公告)日：2023-08-22

申请号：US17412895

申请日：2021-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shuru Chen ,  Meinan He ,  Fang Dai ,  Mark Verbrugge ,  Mei Cai

IPC: H01M4/00 ,  H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/38

CPC classification number: H01M10/0569 ,  H01M4/382 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5815 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: The present disclosure provides an electrolyte system for an electrochemical cell that cycles lithium ions. The electrolyte system may include an aliphatic fluorinated disulfonimide lithium salt in a mixture of organic solvents. The mixture of organic solvents may include a first solvent and a second solvent. The first solvent may include an ether solvent, a carbonate solvent, or a mixture of ether and carbonate solvents. The second solvent may include a fluorinated ether. A molar ratio of the aliphatic fluorinated disulfonimide lithium salt to the first solvent may be greater than or equal to about 1:1.2 to less than or equal to about 1:2. A molar ratio of the first solvent to the second solvent may be greater than or equal to about 1:1 to less than or equal to about 1:4.

公开(公告)号：US11502287B2

公开(公告)日：2022-11-15

申请号：US16131884

申请日：2018-09-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Shuru Chen ,  Meinan He ,  Mei Cai

IPC: H01M4/14 ,  H01M4/66 ,  H01M4/36 ,  H01M4/1395 ,  H01M4/58 ,  H01M4/04 ,  H01M10/0585 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/74 ,  H01M10/052 ,  H01M4/80

Abstract: In a method of manufacturing an electrochemical cell, a porous or non-porous metal substrate may be provided. A precursor solution may be applied to a surface of the metal substrate. The precursor solution may comprise a chalcogen donor compound dissolved in a solvent. The precursor solution may be applied to the surface of the metal substrate such that the chalcogen donor compound reacts with the metal substrate and forms a conformal metal chalcogenide layer on the surface of the metal substrate. A conformal lithium metal layer may be formed on the surface of the metal substrate over the metal chalcogenide layer.