公开(公告)号：US20240250234A1

公开(公告)日：2024-07-25

申请号：US18100911

申请日：2023-01-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Caleb Reese ,  Sayed Youssef Sayed Nagy ,  Joel G. Toner ,  Jeffrey David Cain ,  Xingcheng Xiao

IPC: H01M4/04 ,  H01M4/13 ,  H01M4/38

CPC classification number: H01M4/0435 ,  H01M4/0407 ,  H01M4/13 ,  H01M4/382

Abstract: A pressing machine includes pressing devices, actuators and a control module. At least one of the pressing devices includes a surface having a fluoropolymer material. At least one of the actuators is configured to adjust pressure of the pressing devices on one or more lithium foils, such that the surface presses against one of the one or more lithium foils to form a protective layer. The control module is configured to control the at least one of the actuators to adjust a parameter to control at least one of thickness of the protective layer and fluoride content of the protective layer.

公开(公告)号：US20250062391A1

公开(公告)日：2025-02-20

申请号：US18450601

申请日：2023-08-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sayed Youssef Sayed Nagy ,  Caleb Reese

IPC: H01M10/0525 ,  H01M4/1391

Abstract: Lithium ion cells and methods for producing such cells are provided. The lithium ion cells include a lithium metal anode that includes a current collector and a lithium metal layer, a cathode having a lithium intercalation material, and a solid-state electrolyte (SSE) having a lithiophilic layer on a surface of the SSE. The lithiophilic includes a metal oxide. In one example, the lithiophilic layer is formed by depositing a non-aqueous precursor solution on the surface of a solid-state electrolyte (SSE), wherein the precursor solution includes a metallic nitrate, and decomposing the precursor solution to form the lithiophilic layer.

公开(公告)号：US20250062319A1

公开(公告)日：2025-02-20

申请号：US18449261

申请日：2023-08-14

Applicant: GM Global Technology Operations LLC

Inventor： Jeffrey David Cain ,  Nicholas Paul William Pieczonka ,  Sayed Youssef Sayed Nagy ,  Zachary Hood ,  Shiba Adhikari

IPC: H01M4/36 ,  C25D7/00 ,  C25D9/02 ,  C25D9/04 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42

Abstract: A method is provided for pre-forming anode particles for use in lithium ion batteries. The pre-formed anode particles bear a solid electrolyte of a composition that cannot be formed in situ in the battery. The method includes providing a dispersion of anode precursor particles and an additive not found in the battery in a liquid electrolyte solution. Applying a voltage or current across the dispersion forms the solid electrolyte interphase, on the particles. These particles can be used in an electrode of a lithium ion battery.

公开(公告)号：US20250105269A1

公开(公告)日：2025-03-27

申请号：US18473799

申请日：2023-09-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Diptak Bhattacharya ,  Sayed Youssef Sayed Nagy ,  Caleb Reese ,  Yoojin Kim ,  Shaomao Xu ,  Hassan Ghassemi-Armaki

IPC: H01M4/40 ,  C22C1/02 ,  C22C24/00 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/42 ,  H01M4/74 ,  H01M10/052

Abstract: Methods for fabricating an anode, methods for fabricating a battery, and lithium batteries are disclosed. A method for fabricating an anode includes forming a melt comprising lithium and a surface tension reduction agent, wherein the surface tension reduction agent is selected from the group consisting of silver, tin, gallium, indium, zinc, and combinations thereof; and contacting an anode current collector with the melt, wherein a layer of the melt wets onto the anode current collector to form the anode as a lithium alloy.

公开(公告)号：US20250062362A1

公开(公告)日：2025-02-20

申请号：US18450617

申请日：2023-08-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sayed Youssef Sayed Nagy ,  Caleb Reese ,  Anil K. Sachdev ,  Anita Li ,  Xiaosong Huang

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0585

Abstract: Lithium-ion cells and methods for producing such cells are provided. The lithium-ion cells include a lithium metal anode (LMA), a cathode, and an electrolyte between the LMA and the cathode. The LMA includes a current collector and a deformable layer on a surface of the current collector. The deformable layer is lithium-ion conductive and includes a polymeric material. The cathode has a lithium intercalation material. In some examples, lithium metal is plated on the deformable layer during charge of the lithium-ion cell to define a plated lithium layer between the deformable layer and the electrolyte, and a solid electrolyte interphase (SEI) layer forms on the plated lithium layer separating the plated lithium layer from the electrolyte.

公开(公告)号：US20240234859A1

公开(公告)日：2024-07-11

申请号：US18356765

申请日：2023-07-21

Applicant: GM Global Technology Operations LLC

Inventor： Andrew Clay BOBEL ,  Anil K. Sachdev ,  Anthony Michael Coppola ,  Sayed Youssef Sayed Nagy ,  Jian Yao

IPC: H01M10/653 ,  C25D3/38 ,  C25D5/50 ,  C25D7/06 ,  H01M10/613 ,  H01M10/6557 ,  H01M10/6567 ,  H01M50/213

CPC classification number: H01M10/653 ,  C25D3/38 ,  C25D5/50 ,  C25D7/0671 ,  H01M10/613 ,  H01M10/6557 ,  H01M10/6567 ,  H01M50/213

Abstract: A process for making a ribbon-shaped hollow thermal conductor includes forming a sacrificial material into an insert including a plurality of parallel strands. Plating the sacrificial insert with copper to form a ribbon-shaped structure and removing the sacrificial material from within the ribbon-shaped structure to create a hollow passage through a ribbon-shaped hollow copper thermal conductor.