公开(公告)号：US20240088430A1

公开(公告)日：2024-03-14

申请号：US17896821

申请日：2022-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  WAYNE STATE UNIVERSITY

Inventor： Fan XU ,  Robert D. SCHMIDT ,  Mei CAI ,  Manuela Ferreira BORRAS ,  Yingxi Elaine ZHU

IPC: H01M10/056

CPC classification number: H01M10/056 ,  H01M2300/0071 ,  H01M2300/0082 ,  H01M2300/0097

Abstract: A hybrid solid-state electrolyte layer for use in an electrochemical cell is provided. The hybrid solid-state electrolyte layer includes a polymeric material, a ceramic material, and an interfacial material adhering the polymeric material and the ceramic material. The interfacial material includes a branched copolymer that includes dopamine and a second monomer. The second monomer forms a polymeric moiety in the copolymer that is the same or similar to the polymeric material. In certain variations, the polymeric material defines a polymeric layer, the ceramic material defines a ceramic layer, and the interfacial material defines an interfacial layer that is disposed between the polymeric layer and the ceramic layer. In other variations, the polymeric material defines a polymeric matrix, the ceramic material defines a plurality of ceramic particles dispersed in the polymeric matrix, and the plurality of ceramic particles are coated with the interfacial material.

公开(公告)号：US20240021787A1

公开(公告)日：2024-01-18

申请号：US17864279

申请日：2022-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng XIAO ,  Mei CAI ,  Yifan ZHAO

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M50/449 ,  H01M50/491 ,  H01M50/434 ,  H01M50/443

CPC classification number: H01M4/364 ,  H01M4/5825 ,  H01M4/366 ,  H01M10/0525 ,  H01M50/449 ,  H01M50/491 ,  H01M50/434 ,  H01M50/443 ,  H01M2004/021

Abstract: A hybrid functional particle for use in an electrochemical cell that cycle lithium ions is provided. The hybrid functional particle includes a lithiated zeolite having a plurality of pores and a plurality of lithium-containing particles disposed within one or more pores of the plurality of pores of the lithiated zeolite. For example, the lithiated zeolite has a porosity ranging from about 10 vol. % to about 90 vol. %, and the lithium-containing particles can fill an amount ranging from about 1% to about 100% of a total porosity of the lithiated zeolite. The electrochemical cell includes first and second electrodes separated by a separating layer, and the hybrid functional particle may be disposed within one or both of the electrodes, coated on one or more sides of one or both of the electrodes, disposed within the separating layer, and/or coated on one or more surfaces of the separating layer.

公开(公告)号：US20230246241A1

公开(公告)日：2023-08-03

申请号：US17579144

申请日：2022-01-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jung Hwi CHO ,  Aijie CHEN ,  Xingcheng XIAO ,  Mei CAI

IPC: H01M10/058 ,  H01M10/0525 ,  H01M4/134 ,  H01M4/04

CPC classification number: H01M10/058 ,  H01M4/134 ,  H01M4/0445 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2300/0068

Abstract: A method for forming a solid-state battery includes preparing a cell, heating the cell to a first temperature, and cycling the cell while maintaining the cell at the first temperature and/or while the cell is cooled to room temperature from the first temperature. The cell includes a solid-state electrolyte adjacent to a negative electrode, including a negative electroactive material selected from the group consisting of: lithium metal, lithium alloys, silicon, silicon alloys, and combinations thereof. The first temperature is between about 50° C. and about 175° C. The cell is cycled for between about 1 cycle and about 10 cycles, where current densities are between about 0.01 mA/cm2 and about 10 mA/cm2, and capacity per cycle between about 0.01 mAh/cm2 and about 1 mAh/cm2.

公开(公告)号：US20230187612A1

公开(公告)日：2023-06-15

申请号：US17548031

申请日：2021-12-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Biqiong WANG ,  Meinan HE ,  Anne M. DAILLY ,  Matthew BECKNER ,  Mei CAI

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0567 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131

CPC classification number: H01M4/366 ,  H01M4/62 ,  H01M10/0567 ,  H01M4/0428 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  H01M2004/028

Abstract: A positive electrode including a plurality of electroactive particles defining an electroactive layer is provided. A first lithium-containing coating is disposed on one or more surfaces of the electroactive layer. The first lithium-containing coating covers between about 30% and about 50% of a total exposed surface area of the electroactive layer. A second lithium-containing coating encompasses at least one electroactive particle of the plurality of electroactive particles. The second lithium-containing coating covers between about 95% and about 100% of the at least one electroactive particle. The first and second lithium-containing coatings each have a thickness between about 0.2 nm and about 5 nm. The positive electrode further includes an electrolyte additive that aids in the formation of a first passivation layer on exposed surfaces of the first lithium-containing coating, and a second passivation layer on exposed surfaces of the second lithium-containing coating.

公开(公告)号：US20210344004A1

公开(公告)日：2021-11-04

申请号：US16863655

申请日：2020-04-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jin LIU ,  Xingcheng XIAO ,  Meinan HE ,  Mei CAI

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: Solvent-free methods of making a component, like an electrode, for an electrochemical cell are provided. A particle mixture is processed in a dry-coating device having a rotatable vessel defining a cavity with a rotor. The rotatable vessel is rotated at a first speed in a first direction and the rotor at a second speed in a second opposite direction. The particle mixture includes first inorganic particles (e.g., electroactive particles), second inorganic particles (e.g., ceramic HF scavenging particles), and third particles (e.g., electrically conductive carbon-containing particles). The dry coating creates coated particles each having a surface coating (including second inorganic particles and third particles) disposed over a core region (the first inorganic particle). The coated particles are mixed with polymeric particles in a planetary and centrifugal mixer that rotates about a first axis and revolves about a second axis. The polymeric particles surround each of the plurality of coated particles.

公开(公告)号：US20200052338A1

公开(公告)日：2020-02-13

申请号：US16659005

申请日：2019-10-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Fang LIU ,  Qiangfeng XIAO ,  Yunfeng LU ,  Mei CAI ,  Fang DAI ,  Li YANG

IPC: H01M10/0567 ,  H01M10/42 ,  H01M10/0568 ,  H01M10/0569

Abstract: An example electrolyte includes a solvent, a lithium salt, and an additive selected from the group consisting of a mercaptosilane, a mercaptosiloxane, and combinations thereof. The electrolyte may be used in a method for making a solid electrolyte interface (SEI) layer on a surface of an electrode. A negative electrode structure may be formed from the method.

公开(公告)号：US20190319242A1

公开(公告)日：2019-10-17

申请号：US15953142

申请日：2018-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gayatri V. DADHEECH ,  Li YANG ,  Mei CAI ,  Biqiong WANG

IPC: H01M2/16 ,  H01M10/0525

Abstract: A modified separator for a high-energy lithium metal-based electrochemical cell and methods of formation relating thereto are provided. The modified separator includes a substrate including a dopant and a coating layer disposed on the doped substrate. The dopant and compound comprising the coating layer are independently selected from the group consisting of: aluminum oxide (Al2O3), titanium dioxide (TiO2), zirconium dioxide (ZrO2), zinc oxide (ZnO), iron oxide (Fe2O3), tin oxide (SnO), silicon oxide (SiO2), tantalum oxide (Ta2O5), lanthanum oxide (La2O3), hydrofluoroolefin (HfO), cerium oxide (CeO2), and combinations thereof.

公开(公告)号：US20240405332A1

公开(公告)日：2024-12-05

申请号：US18325515

申请日：2023-05-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hui-ping WANG ,  Lu HUANG ,  Fang DAI ,  Guangze LI ,  Mei CAI

IPC: H01M50/209 ,  H01M10/04 ,  H01M10/6556 ,  H01M50/103 ,  H01M50/107 ,  H01M50/213

Abstract: A battery system includes N hollow battery cells, each including an enclosure including a top surface, a bottom surface, and a side wall; a hollow center tube including a side wall and a cavity enclosed by the side wall, and a roll including electrode and separator layers arranged between an outer surface of the hollow center tube and the enclosure. The hollow center tube passes through at least one of the top surface and the bottom surface of the enclosure. A battery heat exchange system includes a first fluid channel including N ports configured to at least one of supply fluid to and receive fluid from at least one end of the hollow center tube of the N hollow battery cells.

公开(公告)号：US20230231135A1

公开(公告)日：2023-07-20

申请号：US17578169

申请日：2022-01-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yifan ZHAO ,  Xingcheng XIAO ,  Shuru CHEN ,  Mei CAI

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

CPC classification number: H01M4/62 ,  H01M4/366 ,  H01M4/382 ,  H01M10/0525 ,  H01M2004/021

Abstract: An electrode includes an electroactive material layer and a protective layer disposed on or adjacent to a surface of the electroactive material layer. The protective layer includes a polymerized cyclic ether and a salt dispersed therewithin. The salt includes a nitrate salt and a phosphate salt. The salt may also include a Lewis acid salt. The protective layer is formed by disposing a solution, including the salt and solvent, on or adjacent to the surface of the electroactive material layer, and polymerizing the solvent. The solvent includes the cyclic ether, and also, one or more organic phosphates.

公开(公告)号：US20230064146A1

公开(公告)日：2023-03-02

申请号：US17412895

申请日：2021-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shuru CHEN ,  Meinan HE ,  Fang DAI ,  Mark VERBRUGGE ,  Mei CAI

IPC: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M4/58

Abstract: The present disclosure provides an electrolyte system for an electrochemical cell that cycles lithium ions. The electrolyte system may include an aliphatic fluorinated disulfonimide lithium salt in a mixture of organic solvents. The mixture of organic solvents may include a first solvent and a second solvent. The first solvent may include an ether solvent, a carbonate solvent, or a mixture of ether and carbonate solvents. The second solvent may include a fluorinated ether. A molar ratio of the aliphatic fluorinated disulfonimide lithium salt to the first solvent may be greater than or equal to about 1:1.2 to less than or equal to about 1:2. A molar ratio of the first solvent to the second solvent may be greater than or equal to about 1:1 to less than or equal to about 1:4.