公开(公告)号：US10483592B2

公开(公告)日：2019-11-19

申请号：US15691162

申请日：2017-08-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Mark W. Verbrugge ,  Mei Cai ,  Sherman H. Zeng

IPC: H01M10/0525 ,  H01M10/04 ,  H01M2/02 ,  H01M10/0585 ,  H01M2/36

Abstract: A method of manufacturing a lithium ion battery cell. A non-aqueous liquid electrolyte solution is placed in contact with particles of a lithium ion-exchanged zeolite material for a time sufficient to remove water molecules from the liquid electrolyte solution. Thereafter, the liquid electrolyte solution may be introduced into an electrochemical cell assembly and hermetically sealed within a cell casing to form a lithium ion battery cell.

公开(公告)号：US10476074B2

公开(公告)日：2019-11-12

申请号：US15661240

申请日：2017-07-27

Applicant: GM Global Technology Operations LLC

Inventor： Xingcheng Xiao ,  Jingmei Shen ,  Mei Cai ,  Martin S. Ruthkosky

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  C23C24/02 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395

Abstract: Methods for making electroactive composite materials for electrochemical cells are provided. The method includes introducing a particle mixture comprising a first particle having a first diameter (R1) and comprising a first electroactive material and a second particle having a second diameter (R2) smaller than the first diameter (R1) and comprising a second electroactive material into a dry-coating device having a rotatable vessel defining a cavity and a rotor disposed therewithin. The vessel is rotated at a first speed in a first direction, and the rotor is rotated at a second speed greater than the first speed in a second direction opposing the first direction. The particle mixture flows between cavity walls and the rotor and experiences thrusting and compression forces that create a substantially uniform coating comprising the second electroactive material on one or more exposed surfaces of the first particle.

公开(公告)号：US20190312254A1

公开(公告)日：2019-10-10

申请号：US15947272

申请日：2018-04-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao

IPC: H01M4/04 ,  H01M10/04 ,  H01M10/052

Abstract: A lithium-containing electrode with a protective coating and lithium-containing electrochemical cells including the same are provided herein. The protective coating has a first layer including a first fluoropolymeric matrix and Li—F compounds and a second layer including a second fluoropolymeric matrix. Methods of preparing the protective coating on the lithium-containing electrode by applying a first fluoropolymer and/or a first fluoropolymer precursor and a second fluoropolymer and/or a second fluoropolymer precursor are also provided herein.

公开(公告)号：US20190309670A1

公开(公告)日：2019-10-10

申请号：US15949554

申请日：2018-04-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Wang ,  Gongshin Qi ,  Xingcheng Xiao ,  Wei Li

IPC: F01N3/20 ,  B01D46/00 ,  B01D53/94 ,  B01J38/02 ,  B01J38/12 ,  F01N3/027 ,  F01N3/035 ,  H05B6/10 ,  H05B6/36

Abstract: A component of an exhaust system is provided. The component includes a housing extending from an inlet at a first end to an outlet at an opposing second end, an electrically conductive material disposed within the housing, and an induction coil configured to emit a magnetic field. The magnetic field is operable to heat the electrically conductive material from a first temperature of greater than or equal to about −20° C. to less than or equal to about 50° C. to a second temperature of greater than or equal to about 200° C. to less than or equal to about 700° C. in a time period of less than or equal to about 20 seconds.

公开(公告)号：US10396360B2

公开(公告)日：2019-08-27

申请号：US15160377

申请日：2016-05-20

Applicant: GM Global Technology Operations LLC

Inventor： Xingcheng Xiao ,  Xiaosong Huang

IPC: H01M10/0525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/02

Abstract: An electroactive material for use in an electrochemical cell, like a lithium ion battery, is provided. The electroactive material comprises silicon or tin and undergoes substantial expansion during operation of a lithium ion battery. A polymeric ultrathin conformal coating is formed over a surface of the electroactive material. The coating is flexible and is capable of reversibly elongating by at least 250% from a contracted state to an expanded state in at least one direction to minimize or prevent fracturing of the negative electrode material during lithium ion cycling. The coating may be applied by vapor precursors reacting in atomic layer deposition (ALD) to form conformal ultrathin layers over the electroactive materials. Methods for making such materials and using such materials in electrochemical cells are likewise provided.

公开(公告)号：US20190257232A1

公开(公告)日：2019-08-22

申请号：US15902464

申请日：2018-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Yang ,  Ryan J. Day ,  Xingcheng Xiao ,  Gongshin Qi ,  Wei Li

IPC: F01N3/10 ,  B01J23/50 ,  B01J23/52 ,  B01J23/755 ,  B01J23/75 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46

Abstract: Bimetallic oxidation catalyst devices include a support body, one or more metal A bulk deposits disposed on the support body, and a plurality of metal B atomic clusters disposed on the surface of each of the metal A bulk deposits. Metal A and metal B are different metals each selected from the group consisting of platinum group metals (PGM), Ag, Au, Ni, Co, and Cu, and substantially no metal B is deposited on the support body. At least 85% by weight of the metal B atomic clusters comprise up to 10 atoms and the maximum metal B atomic cluster size is 200 metal B atoms. The combined loading of metal A and metal B can be less than 1.5% by weight relative to the weight of the support body. Metal A can include Pd, Rh, Rh, or Pd, and metal B can include Pt, Pt, Ag, or Ag.

公开(公告)号：US10122002B2

公开(公告)日：2018-11-06

申请号：US14601355

申请日：2015-01-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jung Hyun Kim ,  Bob R. Powell, Jr. ,  Meng Jiang ,  Peng Lu ,  Xingcheng Xiao ,  Nicholas P. W. Pieczonka

IPC: H01M2/16 ,  H01M10/0525 ,  H01M4/13 ,  H01M10/0562 ,  H01M10/0565 ,  H01M10/056 ,  H01M10/0585 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02 ,  H01M4/587

Abstract: A lithium-ion conducting, solid electrolyte is deposited on a thin, flexible, porous alumina membrane which is placed between co-extensive facing side surfaces of a porous, lithium-accepting, negative electrode and a positive electrode formed of a porous layer of particles of a compound of lithium, a transition metal element, and optionally, another metal element. A liquid electrolyte formed, for example, of LiPF6 dissolved in an organic solvent, infiltrates the electrode materials of the two porous electrodes for transport of lithium ions during cell operation. But the solid electrolyte permits the passage of only lithium ions, and the negative electrode is protected from damage by transition metal ions or other chemical species produced in the positive electrode of the lithium-ion cell.

公开(公告)号：US20180185832A1

公开(公告)日：2018-07-05

申请号：US15399179

申请日：2017-01-05

Applicant: GM Global Technology Operations LLC

Inventor： Xingcheng Xiao ,  Gongshin Qi ,  Ryan J. Day ,  Ming Yang

IPC: B01J37/03 ,  B01J35/00 ,  B01J37/18 ,  B01J37/08 ,  B01J23/42 ,  B01J23/44 ,  B01J21/04

CPC classification number: B01J37/035 ,  B01J23/42 ,  B01J23/44 ,  B01J35/0013 ,  B01J35/0086 ,  B01J37/08 ,  B01J37/18

Abstract: Catalyst systems that are resistant to high-temperature sintering and methods for preparing such catalyst systems that are resistant to sintering at high temperatures are provided. Methods of forming such catalyst systems include contacting a support having a surface including a catalyst particle with a solution comprising a metal salt and having an acidic pH. The metal salt is precipitated onto the surface of the support. Next, the metal salt is calcined to selectively generate a porous coating of metal oxide on the surface of the support distributed around the catalyst particle.

公开(公告)号：US09923189B2

公开(公告)日：2018-03-20

申请号：US15013769

申请日：2016-02-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao

IPC: C25D13/12 ,  H01M4/04 ,  H01M4/38 ,  H01M4/134 ,  H01M4/133 ,  H01M4/62 ,  H01M4/583 ,  H01M4/13 ,  H01M4/139

CPC classification number: H01M4/0457 ,  C25D13/02 ,  C25D13/12 ,  H01M4/13 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/386 ,  H01M4/583 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625

Abstract: A method for manufacturing an electrode for a lithium-based battery by electrophoretic deposition is provided. The method includes: mixing particles with graphene oxide and a binder in a solution, the particles including a material selected from silicon, silicon oxide, silicon alloys, tin, tin oxide, sulfur, lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium nickel manganese oxide, and lithium nickel manganese cobalt oxide. The method further includes applying a potential between a current collector and a counter electrode immersed in the solution to deposit a coating of a combination of the particles, at least partially reduced graphene oxide, and binder onto the current collector. The method still further includes drying the coated current collector.

公开(公告)号：US20170141383A1

公开(公告)日：2017-05-18

申请号：US14945166

申请日：2015-11-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri V. Dadheech ,  Xingcheng Xiao ,  Mei Cai

IPC: H01M4/36 ,  H01M4/38 ,  C23C14/06 ,  H01M4/04 ,  C23C14/00 ,  H01M4/48 ,  H01M4/62

CPC classification number: H01M4/366 ,  C23C14/0005 ,  C23C14/0042 ,  C23C14/0605 ,  C23C14/223 ,  C23C14/225 ,  H01M4/0426 ,  H01M4/38 ,  H01M4/386 ,  H01M4/483 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021

Abstract: In an example of a method for making an electrode active material, a sacrificial layer is formed on a nanomaterial. Carbon is coated on the sacrificial layer to form a carbon layer. Titanium dioxide is coated on the carbon layer to form a titanium dioxide layer. The sacrificial layer is removed to form a void between the nanomaterial and the carbon layer.