公开(公告)号：US20250038256A1

公开(公告)日：2025-01-30

申请号：US18352106

申请日：2023-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Devendrasinh DARBAR ,  Gongshin QI ,  Chuanlong WANG ,  Wei LI

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0569 ,  H01M10/42

Abstract: A battery that cycles lithium ions includes a positive electrode and an electrolyte infiltrating the positive electrode. The positive electrode includes an electroactive material comprising a lithium-and manganese-rich oxide. The electrolyte includes an organic solvent, an inorganic lithium salt, and a nitrile additive.

公开(公告)号：US20250015266A1

公开(公告)日：2025-01-09

申请号：US18347135

申请日：2023-07-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Vamakshi YADAV ,  Devendrasinh DARBAR ,  Wei LI ,  Yuntao GU ,  Raneen TAHA

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/485

Abstract: A cathode active material layer for a cathode electrode of a battery cell, comprising particles of cathode active material including one or more materials selected from a group consisting of a lithium- and manganese-rich (LMR) material, lithium nickel manganese cobalt oxide (NMC), lithium nickel manganese cobalt aluminum oxide (NMCA), and lithium iron phosphate (LFP). A coating layer is formed on an outer surface of the particles of the cathode active material and including one or more transition metal oxides.

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.