公开(公告)号：US12040479B2

公开(公告)日：2024-07-16

申请号：US17359817

申请日：2021-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Louis G. Hector, Jr. ,  Anil K. Sachdev ,  Jeffrey D. Cain

IPC: H01M4/00 ,  C30B7/12 ,  C30B7/14 ,  C30B19/10 ,  C30B28/04 ,  C30B29/02 ,  C30B30/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/134 ,  C30B7/12 ,  C30B7/14 ,  C30B19/103 ,  C30B28/04 ,  C30B29/02 ,  C30B30/02 ,  H01M4/0404 ,  H01M4/0452 ,  H01M4/1395 ,  H01M4/382 ,  H01M10/0525 ,  H01M2004/027

Abstract: A lithium metal negative electrode for an electrochemical cell for a secondary lithium metal battery includes a polycrystalline metal substrate having a major facing surface with a defined crystallographic texture. An epitaxial lithium metal layer is formed on the major facing surface of the polycrystalline metal substrate. The epitaxial lithium metal layer exhibits a predominant crystal orientation. The predominant crystal orientation of the epitaxial lithium metal layer is derived from the defined crystallographic texture of the major facing surface of the polycrystalline metal substrate.

公开(公告)号：US12142751B2

公开(公告)日：2024-11-12

申请号：US16912150

申请日：2020-06-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Anil K. Sachdev ,  Jeffrey D. Cain ,  Leng Mao

IPC: H01M4/04 ,  H01M4/38 ,  H01M4/46 ,  H01M10/0525

Abstract: A method for making a pre-lithiated electrode for a lithium ion battery cell, a method for making a battery with a pre-lithiated electrode, and an electric vehicle with a pre-lithiated electrode are provided. An exemplary method for making a pre-lithiated electrode for a lithium ion battery cell includes electrochemically connecting a magnesium-lithium alloy to the electrode. Further, the method includes pre-lithiating the electrode by transferring lithium ions from the magnesium-lithium alloy to the electrode. Also, the method includes electrochemically disconnecting the magnesium-lithium alloy from the electrode.

公开(公告)号：US11476463B2

公开(公告)日：2022-10-18

申请号：US16987597

申请日：2020-08-07

Applicant: GM Global Technology Operations LLC

Inventor： Jeffrey D. Cain ,  Thomas E. Moylan ,  Andrew C. Bobel ,  Lei Wang

IPC: H01M4/04 ,  H01M4/583 ,  C01B32/205 ,  H01G9/00 ,  H01M4/36

Abstract: Disclosed herein is a method comprising mixing an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; subjecting the carbon coated particle to a pulsed voltage between parallel plate electrodes or between rolls of a roll mill; and converting the carbon coated particle to a graphite coated particle via localized Joule heating. Disclosed herein too is an apparatus comprising a mixing device that is operative to mix an electroactive particle with a carbonaceous material to form a particle mixture that comprises a carbon coated particle; and a device for applying a pulsed voltage to the particle mixture; where the applying of the pulsed voltage is conducted when the particle mixture is located between opposing plate electrodes or between opposing rolls of a roll mill; where the device for applying the pulsed voltage converts the carbon coated particle into a graphite coated particle.

公开(公告)号：US20220123279A1

公开(公告)日：2022-04-21

申请号：US17071118

申请日：2020-10-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Leng Mao ,  Jeffrey D. Cain ,  Anil K. Sachdev ,  Andrew C. Bobel

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/505 ,  H01M4/46

Abstract: Self-lithiating battery cells include an anode having a current collector, a host material applied to the current collector comprising graphite, silicon particles, and/or SiOx particles, wherein x is less than or equal to 2, and lithium foil in contact with the current collector. Methods for pre-lithiating battery cells include charging and discharging the battery cell to deplete the lithium foil by causing lithium ions to migrate from the lithium foil to the cathode and/or the anode. The methods can further include subsequently iteratively charging and discharging the battery while the depleted lithium foil remains within the battery cell. The lithium foil can be pure elemental lithium metal or a lithium magnesium alloy. The lithium foil can include 10 wt. % to 99 wt. % lithium and 1 wt. % to 90 wt. % magnesium. The anode current collector can include perforations.

公开(公告)号：US20220416220A1

公开(公告)日：2022-12-29

申请号：US17359817

申请日：2021-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Louis G. Hector, JR. ,  Anil K. Sachdev ,  Jeffrey D. Cain

IPC: H01M4/134 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/1395 ,  H01M4/38 ,  C30B7/12 ,  C30B7/14 ,  C30B19/10 ,  C30B29/02 ,  C30B30/02 ,  C30B28/04

Abstract: A lithium metal negative electrode for an electrochemical cell for a secondary lithium metal battery includes a polycrystalline metal substrate having a major facing surface with a defined crystallographic texture. An epitaxial lithium metal layer is formed on the major facing surface of the polycrystalline metal substrate. The epitaxial lithium metal layer exhibits a predominant crystal orientation. The predominant crystal orientation of the epitaxial lithium metal layer is derived from the defined crystallographic texture of the major facing surface of the polycrystalline metal substrate.

公开(公告)号：US11342545B2

公开(公告)日：2022-05-24

申请号：US16706331

申请日：2019-12-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey D. Cain ,  Andrew C. Bobel ,  Nicholas P. Pieczonka ,  Robert D. Schmidt ,  Anil K. Sachdev ,  Mark W. Verbrugge

IPC: H01M4/04 ,  H01M4/1391 ,  H01M10/0525

Abstract: The present disclosure relates to electroactive materials for use in electrodes of lithium-ion electrochemical cells and methods of making the same, for example, methods for lithiating electroactive materials. A method of lithiating an electroactive material may include dispersing an electroactive material precursor within a room-temperature electrolyte that includes a lithium-based salt and contacting the electrolyte mixture and a lithium source so as to cause the lithium source to ionize and form lithium ions. The lithium ions may react with the electroactive material precursor to form a fully lithiated electroactive material (e.g., greater than 70% of total lithiation). The method further includes, in certain aspects, electrochemically discharging the fully lithiated electroactive material to form a lithiated electroactive material having an optimized lithiation state (e.g., less than or equal to about 40% of a first lithiation state of the fully lithiated electroactive material).

公开(公告)号：US20210408517A1

公开(公告)日：2021-12-30

申请号：US16912150

申请日：2020-06-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Anil K. Sachdev ,  Jeffrey D. Cain ,  Leng Mao

IPC: H01M4/04 ,  H01M10/0525 ,  H01M4/46 ,  H01M4/38

Abstract: A method for making a pre-lithiated electrode for a lithium ion battery cell, a method for making a battery with a pre-lithiated electrode, and an electric vehicle with a pre-lithiated electrode are provided. An exemplary method for making a pre-lithiated electrode for a lithium ion battery cell includes electrochemically connecting a magnesium-lithium alloy to the electrode. Further, the method includes pre-lithiating the electrode by transferring lithium ions from the magnesium-lithium alloy to the electrode. Also, the method includes electrochemically disconnecting the magnesium-lithium alloy from the electrode.