公开(公告)号：US11753305B2

公开(公告)日：2023-09-12

申请号：US17473856

申请日：2021-09-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi Liu ,  Xiaosong Huang ,  Bradley R. Frieberg

IPC: C01B33/06 ,  C01B33/32 ,  H01M10/0525

CPC classification number: C01B33/06 ,  C01B33/32 ,  H01M10/0525

Abstract: Methods of making a negative electrode material for an electrochemical cell that cycles lithium ions is provided. The method may include centrifugally distributing a molten precursor comprising silicon, oxygen, and lithium by contacting the molten precursor with a rotating surface in a centrifugal atomizing reactor. The molten precursor is formed by combining lithium, silicon, and oxygen. For example, the precursor may be formed from a mixture comprising silicon dioxide (SiO2), lithium oxide (Li2O), and silicon (Si). The method may further include solidifying the molten precursor to form a plurality of substantially round solid electroactive particles comprising a mixture of lithium silicide (LiySi, where 0

公开(公告)号：US11554417B2

公开(公告)日：2023-01-17

申请号：US16681321

申请日：2019-11-12

Applicant: GM Global Technology Operations LLC

Inventor： Zhongyi Liu ,  Bin Hu ,  Xiaosong Huang ,  Wayne Cai

IPC: B22F9/08 ,  H01M4/38 ,  B22F9/10 ,  B01J2/02 ,  C01B33/02

Abstract: A multistage centrifugal atomizer comprises an outer shell that contains an inlet port and an outlet port and that encloses a tundish, a first inclined rotating surface and a second inclined rotating surface. The first inclined rotating surface is opposedly disposed to the second inclined rotating surface. The inlet is used to introduce a molten material into the multistage atomizer and the outlet is used to remove ultrafine particles having a D50 of less than 20 micrometers.

公开(公告)号：US20220320493A1

公开(公告)日：2022-10-06

申请号：US17220050

申请日：2021-04-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bradley R. Frieberg ,  Zhongyi Liu ,  Xiaosong Huang ,  James R. Salvador

IPC: H01M4/36 ,  H01M4/40 ,  H01M10/052 ,  H01M10/0562 ,  H01M4/38 ,  H01M4/62

Abstract: A method of making a negative electrode for an electrochemical cell of a secondary lithium battery. The negative electrode includes composite Li—Si alloy particles dispersed in a polymer binder. The composite Li—Si alloy particles are formed by contacting Li—Si alloy particles with a precursor solution that includes a phosphorus sulfide compound dissolved in an organic solvent to form a lithium thiophosphate solid electrolyte layer over an entire outer surface of each of the Li—Si alloy particles.

公开(公告)号：US11424442B2

公开(公告)日：2022-08-23

申请号：US16706351

申请日：2019-12-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bradley R. Frieberg ,  Xiaosong Huang ,  Zhongyi Liu ,  Mark W. Verbrugge

IPC: H01M4/1395 ,  H01M4/04 ,  B22F9/10 ,  H01M10/0525 ,  H01M4/02

Abstract: A method of making a negative electrode material for an electrochemical cell that cycles lithium ions is provided that includes centrifugally distributing a molten precursor comprising silicon and lithium by contacting the molten precursor with a rotating surface in a centrifugal atomizing reactor. The molten precursor is solidified to form a plurality of substantially round solid electroactive particles comprising an alloy of lithium and silicon and having a D50 diameter of less than or equal to about 20 micrometers. In certain variations, the negative electroactive material particles may further have one or more coatings disposed thereon, such as a carbonaceous coating and/or an oxide-based coating.

公开(公告)号：US20220258274A1

公开(公告)日：2022-08-18

申请号：US17174971

申请日：2021-02-12

Applicant: GM Global Technology Operations LLC ,  Penn State Research Foundation

Inventor： Nannan Chen ,  Hongliang Wang ,  Zhongyi Liu

IPC: B23K11/16 ,  B32B15/01 ,  B32B15/20 ,  H01M50/119 ,  H01M50/124 ,  B23K11/24

Abstract: System and method of manufacturing high-strength bonded metal sheets for a battery cell are provided. The method comprises providing a stackup comprising a first metal sheet and a second metal sheet. The first and second metal sheets are separated by a first coating layer. The first coating layer comprises nickel-phosphide. The first metal sheet includes a first material of a first melting point and the second metal sheet includes a second material of a second melting point. The first coating layer including a third material of a third melting point. The method further comprises heating the stackup to allow crystallization of nickel in the first coating layer and remove the residual nickel-phosphide defining an enhanced coating layer. The enhanced coating layer comprises crystallized nickel for high-strength solid state bonding of the first and second metal sheets to the enhanced coating layer.

公开(公告)号：US20210138548A1

公开(公告)日：2021-05-13

申请号：US16681321

申请日：2019-11-12

Applicant: GM Global Technology Operations LLC

Inventor： Zhongyi Liu ,  Bin Hu ,  Xiaosong Huang ,  Wayne Cai

IPC: B22F9/08 ,  B22F9/10 ,  B01J2/02 ,  C01B33/02 ,  H01M4/38

Abstract: A multistage centrifugal atomizer comprises an outer shell that contains an inlet port and an outlet port and that encloses a tundish, a first inclined rotating surface and a second inclined rotating surface. The first inclined rotating surface is opposedly disposed to the second inclined rotating surface. The inlet is used to introduce a molten material into the multistage atomizer and the outlet is used to remove ultrafine particles having a D50 of less than 20 micrometers.

公开(公告)号：US20200227735A1

公开(公告)日：2020-07-16

申请号：US16249443

申请日：2019-01-16

Applicant: GM Global Technology Operations LLC

Inventor： Hamid G. Kia ,  Xiaosong Huang ,  Zhongyi Liu

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/48 ,  H01M4/62 ,  H01M10/0525

Abstract: Systems, methods, and high performance electrochemical devices employing electroactive particles having a sandwich structure are described. The electroactive particle includes an electroactive layer between a pair of dimension-control layers. The electroactive layer includes an electroactive material configured to receive cations and experience a volumetric change in response thereto. The dimension-control layers are configured to inhibit planar dimensional changes of the electroactive particle such that the volumetric change of the electroactive layer occurs through a vertical dimension of the electroactive particle. The vertical dimension is orthogonal to the planar dimensions.

公开(公告)号：US20190352748A1

公开(公告)日：2019-11-21

申请号：US15984883

申请日：2018-05-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi Liu ,  Tengjiao Qi ,  James R. Salvador ,  Ratandeep S. Kukreja

IPC: C22C33/04 ,  C22C33/00 ,  C22C38/06 ,  C22C38/02 ,  C21D6/00

Abstract: Provided is a method of manufacturing a crystalline aluminum-iron-silicon alloy, and optionally an automotive component comprising the same, comprising forming a composite ingot including a plurality of crystalline phases by melting aluminum, iron, and silicon raw materials in an inert environment to form a substantially homogenous melt, subsequently solidifying the melt, and annealing the ingot under vacuum by heating at a temperature in the range of 850° C. to 1000° C. yield an annealed crystalline ingot wherein the predominant crystalline phase is FCC Al3Fe2Si. The raw materials can further include one or more additives such as zinc, zirconium, tin, and chromium. Melting can occur above the FCC Al3Fe2Si crystalline phase melting point, or at a temperature of about 1100° C. to about 1400° C. Annealing can occur under vacuum conditions.

公开(公告)号：US10326142B2

公开(公告)日：2019-06-18

申请号：US14855142

申请日：2015-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yan Wu ,  Zhongyi Liu ,  Xiaosong Huang ,  Xingyi Yang

IPC: H01M4/62 ,  H01M4/485 ,  H01M4/04 ,  C01F7/34 ,  C01F7/44 ,  H01M4/13 ,  H01M10/42 ,  H01M10/0525 ,  H01M4/02 ,  H01M4/131 ,  H01M4/1391

Abstract: A positive electrode includes a lithium-based active material, a binder, a conductive filler, and discrete aluminum oxide nanomaterials. The aluminum oxide nanomaterials are mixed, as an additive, throughout the positive electrode with the lithium-based active material, the binder, and the conductive filler. The positive electrode with the discrete aluminum oxide nanomaterials may be incorporated into a lithium ion battery. The aluminum oxide nanomaterials may be formed by the following method. A solution is formed by mixing an aluminum oxide precursor and an acid. A carbon material is added to the solution, thereby forming an aqueous mixture having the carbon material therein. Hydrothermal synthesis is performed using the aqueous mixture, and precursor nanostructures are grown on the carbon material. The precursor nanostructures on the carbon material are annealed so that the carbon material is removed and aluminum oxide nanomaterials are formed.

公开(公告)号：US10260131B2

公开(公告)日：2019-04-16

申请号：US15232487

申请日：2016-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhongyi Liu ,  Frederick E. Pinkerton ,  Tengjiao Qi

IPC: C22C30/00 ,  C22C1/04 ,  B22F9/04

Abstract: In an example of a method for forming a high-strength, lightweight alloy, starting materials are provided. The starting materials include aluminum, iron, and silicon. The starting materials are ball milled to generate the high-strength, lightweight alloy of a stable AlxFeySiz phase, wherein x ranges from about 3 to about 5, y ranges from about 1.5 to about 2.2, and z is about 1.