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    HIGH-VALENT DOPED LITHIUM- AND MANGANESE-RICH POSITIVE ELECTRODE MATERIALS AND METHODS OF MANUFACTURING THE SAME
    1.
    发明公开
    HIGH-VALENT DOPED LITHIUM- AND MANGANESE-RICH POSITIVE ELECTRODE MATERIALS AND METHODS OF MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20240360002A1

    公开(公告)日：2024-10-31

    申请号：US18306900

    申请日：2023-04-25

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Devendrasinh DARBAR ,  Raneen Taha ,  Gongshin Qi

    IPC分类号： C01G53/00

    CPC分类号： C01G53/50 ,  C01G53/006 ,  C01P2004/90 ,  C01P2006/40

    摘要： 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.

    Platinum-containing catalyst systems
    2.
    发明授权
    Platinum-containing catalyst systems 有权

    公开(公告)号：US10926245B1

    公开(公告)日：2021-02-23

    申请号：US16547100

    申请日：2019-08-21

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Gongshin Qi ,  Wei Li ,  Se H. Oh ,  Ming Yang

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

    摘要： 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).

    METHODS FOR PREPARING CATALYST SYSTEMS
    3.
    发明申请
    METHODS FOR PREPARING CATALYST SYSTEMS 审中-公开

    公开(公告)号：US20200047160A1

    公开(公告)日：2020-02-13

    申请号：US16056894

    申请日：2018-08-07

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng Xiao ,  Ming Yang ,  Gongshin Qi ,  Wei Li

    IPC分类号： B01J23/66 ,  B01J35/02 ,  B01J37/02

    摘要： Methods for preparing a catalyst system, include providing a catalytic substrate comprising a catalyst support having a surface with a plurality of metal catalytic nanoparticles bound thereto and physically mixing and/or electrostatically combining the catalytic substrate with a plurality of oxide coating nanoparticles to provide a coating of oxide coating nanoparticles on the surface of the catalytic nanoparticles. The metal catalytic nanoparticles can be one or more of ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and gold. Physically combining can include combining via ball milling, blending, acoustic mixing, or theta composition, and the oxide coating nanoparticles can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, lanthanum, iron, strontium, and calcium. The catalyst support can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, iron, strontium, and calcium.

    Non-thermal plasma/ozone-assisted catalytic system and use in exhaust systems
    4.
    发明授权
    Non-thermal plasma/ozone-assisted catalytic system and use in exhaust systems 有权

    公开(公告)号：US10329976B2

    公开(公告)日：2019-06-25

    申请号：US15675126

    申请日：2017-08-11

    申请人： GM Global Technology Operations LLC

    发明人： Lei Wang ,  Gongshin Qi ,  Wei Li

    IPC分类号： F01N3/01 ,  H05H1/24 ,  F01N3/027 ,  F02M26/22 ,  B01D53/32 ,  B01D53/94 ,  B01J19/08 ,  H05H1/48

    摘要： An engine assembly includes a diesel internal combustion engine and an aftertreatment system coupled to the diesel internal combustion engine. The aftertreatment system includes a diesel oxidation catalyst coupled to the diesel internal combustion engine such that the diesel oxidation catalyst receives exhaust gases from the diesel internal combustion engine. The aftertreatment system includes a plasma generator in fluid communication with the diesel oxidation catalyst, wherein the plasma generator is upstream of the diesel oxidation catalyst and downstream of the diesel internal combustion engine, and the plasma generator is configured to generate oxidizers to at least partially oxidize hydrocarbons in the exhaust gases exiting the diesel internal combustion engine.