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：US20230369568A1

公开(公告)日：2023-11-16

申请号：US17742037

申请日：2022-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin QI ,  Wei LI

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode material is provided. The positive electrode material includes an electroactive material core and an electrochemically active coating that surrounds the electroactive material core. The electroactive material core includes Li1+xM1−xO2, where 0≤x≤0.5 and M is selected from the group consisting of: nickel (Ni), manganese (Mn), iron (Fe), tungsten (W), molybdenum (Mo), vanadium (V), zirconium (Zr), niobium (Nb), aluminum (Al), magnesium (Mg), and combinations thereof. The electrochemically active coating includes Li1+xM′1−xO2, where 0≤x≤0.2 and M′ is selected from the group consisting of: nickel (Ni), manganese (Mn), iron (Fe), tungsten (W), molybdenum (Mo), vanadium (V), zirconium (Zr), niobium (Nb), aluminum (Al), magnesium (Mg), and combinations thereof. The electrochemically active coating is a distinct composition from the electroactive material core.

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：US20240372086A1

公开(公告)日：2024-11-07

申请号：US18309913

申请日：2023-05-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei WANG ,  Jiazhi HU ,  Meng JIANG ,  Gongshin QI ,  Wei LI

IPC: H01M4/505 ,  H01M10/0525

Abstract: A method for controlling a battery includes operating a lithium- and manganese-rich (LMR) battery within a first voltage window defined by an upper cutoff voltage threshold and a lower cutoff voltage threshold; monitoring a battery capacity of the LMR battery; and in response to the battery capacity of the LMR battery falling below a predetermined battery capacity, changing the first voltage window to a second voltage window by reducing the lower cutoff voltage threshold by a predetermined voltage value.

公开(公告)号：US20230048577A1

公开(公告)日：2023-02-16

申请号：US17387155

申请日：2021-07-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin QI ,  Wei LI

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M4/04

Abstract: A lithium transition metal oxide electrode including an additional metal is provided herein as well electrochemical cells including the lithium transition metal oxide electrode and methods of making the lithium transition metal oxide electrode. The lithium transition metal oxide electrode includes a first electroactive material including Li1+aNibMncMdO2, where 0.05≤a≤0.6; 0.01≤b≤0.5; 0.1≤c≤0.9; zero (0)≤d≤0.3; b+c+d=1 or a+b+c+d=1; and M represents an additional metal, such as W, Mo, V, Zr, Nb, Ta, Fe, Al, Mg, Si, or a combination thereof.

公开(公告)号：US20210135193A1

公开(公告)日：2021-05-06

申请号：US16668882

申请日：2019-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei WANG ,  Xingcheng XIAO ,  Wei LI ,  Mark W. VERBRUGGE ,  Michael P. BALOGH

IPC: H01M4/1395 ,  H01M4/38 ,  H01M4/04 ,  H01M4/66

Abstract: Methods of making negative electrode materials for an electrochemical cell that cycles lithium ions are provided. A surface of the electrode material formed of silicon, silicon-containing alloys, tin-containing alloys, or combinations thereof is treated with an oxidant at a first temperature of greater than or equal to about 100° C. to form a continuous intermediate layer comprising oxides. The method also includes pyrolyzing a carbon-containing precursor over the continuous intermediate layer at a second temperature of greater than or equal to about 600° C. to form a continuous carbon coating thereon. The intermediate layer oxides may be transformed to carbides. The continuous carbon coating comprises both graphitic carbon and amorphous carbon and may be a multilayered coating, where the inner layer predominantly includes amorphous carbon and the outer layer predominantly includes graphitic carbon.

公开(公告)号：US20210053033A1

公开(公告)日：2021-02-25

申请号：US16547100

申请日：2019-08-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin QI ,  Wei LI ,  Se H. OH ,  Ming YANG

IPC: B01J23/42 ,  B01J33/00 ,  B01D53/94 ,  F01N3/10

Abstract: The present disclosure provides a method for operating a three-way catalyst system at high temperatures. The method includes passing a high-temperature exhaust stream exiting an engine over a thermally stable three-way catalyst system including a metal oxide support; two or more catalytically active metals disposed on the support; and a porous metal oxide coating disposed on one or more exposed surfaces of the support. At least one of the catalytically active metals may be platinum (Pt). The method further includes reducing an amount of the nitrogen oxides (NOx), carbon monoxide (CO), and non-methane hydrocarbons (HCs) in an effluent stream exiting the thermally stable three-way catalyst system so that the effluent stream has a combined amount of nitrogen oxides (NOx) and non-methane hydrocarbons (HCs) of less than or equal to about 30 mg/mile and less than or equal to about 0.5 g/mile of carbon monoxide (CO).

公开(公告)号：US20230234035A1

公开(公告)日：2023-07-27

申请号：US17581447

申请日：2022-01-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  University of Central Florida Research Foundation, Inc.

Inventor： Yuntao GU ,  Wei LI ,  Fudong LIU

IPC: B01J23/44 ,  B01J23/10 ,  B01J21/04 ,  B01J35/00 ,  B01J35/10 ,  B01J37/08 ,  B01J37/02

CPC classification number: B01J23/44 ,  B01J23/10 ,  B01J21/04 ,  B01J35/0006 ,  B01J35/1014 ,  B01J35/1042 ,  B01J37/08 ,  B01J37/0215

Abstract: A layered catalyst structure for purifying an exhaust gas stream includes a catalyst support and a palladium catalyst layer including an atomic dispersion of palladium ions electrostatically adsorbed onto an exterior surface of the catalyst support. The catalyst support includes an alumina substrate, a first ceria layer disposed on and extending substantially continuously over the alumina substrate, and a second colloidal ceria layer formed directly on the first ceria layer over the alumina substrate. The palladium catalyst layer is formed on the exterior surface of the catalyst support by applying a palladium-containing precursor solution to the exterior surface of the catalyst support and then heating the catalyst support and the palladium-containing precursor solution. The palladium-containing precursor solution includes a positively charged palladium complex in an aqueous medium and has a pH greater than a point of zero charge of the second colloidal ceria layer.

公开(公告)号：US20210135194A1

公开(公告)日：2021-05-06

申请号：US16668864

申请日：2019-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei WANG ,  Gongshin QI ,  Wei LI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38 ,  H01M4/587

Abstract: The present disclosure provides a method of forming an electrode material for use in an electrochemical cell that cycles lithium ions. The method includes contacting a catalyst precursor with one or more electroactive materials to form a mixture. The catalyst precursor includes one or more metal salts. The method may also include activating the catalyst precursor in the mixture to form an activated mixture including an activated catalyst; and/or contacting one or more carbonaceous materials with the activated mixture to form the electrode material. The electrode material includes one or more electroactive particles that may be carbon coated disposed within a carbonaceous structure.

公开(公告)号：US20230372909A1

公开(公告)日：2023-11-23

申请号：US17749894

申请日：2022-05-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yuntao GU ,  Gongshin QI ,  Jiazhi HU ,  Wei LI

IPC: B01J23/63 ,  B01J21/04 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01D53/94 ,  F01N3/28

CPC classification number: B01J23/63 ,  B01J21/04 ,  B01J35/0013 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1047 ,  B01J37/0244 ,  B01J37/0242 ,  B01J37/0228 ,  B01J37/0207 ,  B01J37/0236 ,  B01J37/0213 ,  B01D53/945 ,  F01N3/2803 ,  F01N3/2842 ,  B01D2255/9025 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/9207 ,  B01D2255/9205 ,  F01N2370/02

Abstract: A layered catalyst structure for purifying an exhaust gas stream includes a catalyst support and a rhodium catalyst layer including an atomic dispersion of rhodium ions and/or rhodium atoms adsorbed on an exterior surface of the catalyst support. The catalyst support includes an alumina substrate, a first ceria layer disposed on and extending substantially continuously over the alumina substrate, and a second colloidal ceria layer formed directly on the first ceria layer over the alumina substrate.