公开(公告)号：US20240360003A1

公开(公告)日：2024-10-31

申请号：US18306910

申请日：2023-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin QI ,  Devendrasinh Darbar ,  Raneen Taha ,  Wei Li

IPC: C01G53/00

CPC classification number: C01G53/50 ,  C01G53/006 ,  C01P2004/90 ,  C01P2006/40

Abstract: A positive electrode material including a layered lithium- and manganese-rich nickel oxide (LMR) doped with an alkali metal and/or an alkaline earth metal. The positive electrode material may be manufactured by preparing a mixture comprising a transition metal carbonate, a dopant metal carbonate, and a lithium source, and then calcining the mixture to form the alkali metal and/or alkaline earth metal-doped LMR.

公开(公告)号：US20240360002A1

公开(公告)日：2024-10-31

申请号：US18306900

申请日：2023-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Devendrasinh DARBAR ,  Raneen Taha ,  Gongshin Qi

IPC: C01G53/00

CPC classification number: C01G53/50 ,  C01G53/006 ,  C01P2004/90 ,  C01P2006/40

Abstract: A positive electrode material for an electrochemical cell that cycles lithium ions includes a high-valent doped layered lithium- and manganese-rich nickel oxide (HVD-LMR). The high-valent dopant is a transition metal element having five or more valence electrons. The HVD-LMR positive electrode material may be manufactured by a sol-gel method, wherein a precursor solution is prepared comprising a lithium salt, a manganese salt, a nickel salt, a compound comprising the high-valent dopant, and a chelating agent. The pH of the precursor solution is controlled or adjusted to form a gel comprising a liquid phase and a solid precipitate phase, and then the liquid phase from the solid precipitate phase to form a dried gel. The dried gel is heated in an oxygen-containing environment to form the HVD-LMR positive electrode material.

公开(公告)号：US20250105270A1

公开(公告)日：2025-03-27

申请号：US18471510

申请日：2023-09-21

Applicant: GM Global Technology Operations LLC

Inventor： Vamakshi Yadav ,  Devendrasinh Darbar ,  Raneen Taha ,  Wei Li

IPC: H01M4/505 ,  H01M4/04 ,  H01M10/0525

Abstract: A cathode active particles for use in a cathode of a lithium ion battery comprising a core includes a lithium-manganese-rich oxide and a coating on the core, wherein the coating includes a lithium manganese spinel. The cathode active particle can be made by preparing a dispersion of particles comprising a lithium-manganese-rich metal oxide in an aqueous solution of a salt of a transition metal oxide. The dispersion is mixed, and heated to a temperature in a range of 60 to 125° C. The solids are separated from the dispersion, and calcined. The cathode active particles can be used in cathode and in a battery comprising such cathode.

公开(公告)号：US20250096438A1

公开(公告)日：2025-03-20

申请号：US18469786

申请日：2023-09-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anne Zhang ,  Jing Gao ,  Christine Labaza ,  Yifan Zhao ,  Brian J. Koch ,  Raneen Taha

IPC: H01M50/569 ,  B60L50/60 ,  H01M50/449 ,  H01M50/463 ,  H01M50/528

Abstract: Some embodiments disclosed herein are directed to connectors for thin-film functional separators in battery cells. In accordance with an exemplary embodiment, a thin-film functional separator for a battery cell is provided. The thin-film functional separator may be disposed within the battery cell, such as between a cathode and anode of the battery cell. The thin-film functional separator includes a porous composite membrane that includes a microporous substrate and a coating layer, and includes a lead extending from the porous composite membrane. The lead extending from the porous composite membrane is coupled to an external conductive tab using a mechanical connector that electrically couples the external conductive tab to the lead extending from the porous composite membrane. Other embodiments may be disclosed or claimed.