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：US20240253018A1

公开(公告)日：2024-08-01

申请号：US18103053

申请日：2023-01-30

Applicant: GM Global Technology Operations LLC ,  BASF Corporation

Inventor： Yuntao GU ,  Michelle H. WIEBENGA ,  Raneen TAHA ,  Yuejin LI ,  Xiaolai ZHENG

IPC: B01J23/63 ,  B01D53/94 ,  B01J21/04 ,  B01J23/10 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  F01N3/10 ,  F01N3/28

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01J21/04 ,  B01J23/10 ,  B01J35/19 ,  B01J35/23 ,  B01J35/56 ,  B01J37/0211 ,  B01J37/0236 ,  B01J37/024 ,  B01J37/08 ,  F01N3/101 ,  F01N3/2803 ,  B01D2255/1025 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/01 ,  F01N2370/02

Abstract: A method of manufacturing a layered catalyst for purifying an exhaust gas stream includes introducing a mixture of colloidal ceria, alumina particles, and a liquid medium into a drying chamber via an atomizer to form atomized droplets of the mixture. A drying gas is introduced into the drying chamber such that the atomized droplets contact the drying gas, the liquid medium is removed from the atomized droplets, and ceria nanoparticles deposit on the alumina particles to form composite catalyst support particles. A catalyst precursor including a rhodium precursor and colloidal ceria is applied to the composite catalyst support particles. The composite catalyst support particles and the catalyst precursor are heated to form the layered catalyst. The layered catalyst includes an alumina substrate, a ceria nanoparticle layer extending substantially continuously over the alumina substrate, and a rhodium catalyst layer including an atomic dispersion of rhodium adsorbed on the ceria nanoparticle layer.