公开(公告)号：US20230335706A1

公开(公告)日：2023-10-19

申请号：US17720913

申请日：2022-04-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yifan ZHAO ,  Xingcheng XIAO

IPC: H01M4/133 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/134 ,  H01M4/04

CPC classification number: H01M4/133 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/134 ,  H01M4/0416 ,  H01M2300/0028

Abstract: An electrode assembly that includes an electroactive material layer and a protective layer disposed on or adjacent to the electroactive material layer is provided. The protective layer includes a carbonaceous matrix formed from a fluoropolymer, where lithium fluoride and a nitrate salt are distributed within the carbonaceous matrix. The protective layer further includes residual fluoropolymer and has a first surface adjacent to the electroactive material layer and a second surface opposite to the first surface. A first compositional gradient in the protective layer is defined from the first surface having a first amount of lithium fluoride that is greater than a second amount of lithium fluoride at the second surface, and a second compositional gradient in the protective layer is defined from the first surface having a first amount of residual fluoropolymer that is less than a second amount of residual fluoropolymer at the second surface.

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：US20240047673A1

公开(公告)日：2024-02-08

申请号：US17880528

申请日：2022-08-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yifan ZHAO ,  Xingcheng XIAO

IPC: H01M4/58 ,  H01M10/0568 ,  H01M4/505 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/525

CPC classification number: H01M4/58 ,  H01M10/0568 ,  H01M4/505 ,  H01M4/382 ,  H01M10/0525 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0569

Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions. The electrochemical cell includes a first electrode including a first electroactive material, a second electrode including a second electroactive material, and a separating layer disposed therebetween. The second electroactive material include a plurality of electroactive material particles, where at least a portion of the electroactive material particles have a surface coating that includes a nitrate salt. The first electroactive material can include a lithium metal, and the electrochemical cell can further include a carbonate-based solvent.

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：US20240039118A1

公开(公告)日：2024-02-01

申请号：US17877225

申请日：2022-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yifan ZHAO ,  Xingcheng XIAO ,  Shuru CHEN

IPC: H01M50/449 ,  H01M50/491 ,  H01M50/403 ,  H01M50/417 ,  C07F9/576

CPC classification number: H01M50/449 ,  H01M50/491 ,  H01M50/403 ,  H01M50/417 ,  C07F9/576

Abstract: A separator for an electrochemical cell that cycles lithium ions includes a microporous layer and one or more fire suppression layers disposed on at least one of a first side or an opposite second side of the microporous layer. The one or more fire suppression layers include a ceramic material having interconnected open pores and a cyclophosphazene disposed within the interconnected open pores of the ceramic material.

公开(公告)号：US20250149651A1

公开(公告)日：2025-05-08

申请号：US18641883

申请日：2024-04-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey David CAIN ,  Yifan ZHAO ,  Yun-Yu LAI ,  Thomas A. YERSAK ,  Zhe LI ,  Fang DAI

IPC: H01M10/42 ,  H01M4/38 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0568 ,  H01M10/058 ,  H01M50/383

Abstract: A battery cell includes an enclosure and a battery cell stack including C cathode electrodes each comprising a cathode active material layer arranged on a cathode current collector, S separators, and A anode electrodes each comprising an anode active material layer arranged on an anode current collector, wherein A, C, and S are integers greater than one. The anode active material layer includes an anode active material selected from a group consisting of silicon, silicon oxide, silicon alloy, and tin, a solid-state electrolyte comprising an oxysulfide, a conductive additive, and a binder. An electrolyte includes a solvate ionic liquid.

公开(公告)号：US20240088521A1

公开(公告)日：2024-03-14

申请号：US17896804

申请日：2022-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yifan ZHAO ,  Xingcheng XIAO

IPC: H01M50/449 ,  C08G73/02 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/417 ,  H01M50/491

CPC classification number: H01M50/449 ,  C08G73/0266 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/417 ,  H01M50/491

Abstract: A separator for an electrochemical cell that cycles lithium ions includes a microporous layer and one or more fire suppression layers disposed on at least one of a first side or an opposite second side of the microporous layer. The one or more fire suppression layers include crosslinked cyclopolyphosphazene particles.

公开(公告)号：US20230246295A1

公开(公告)日：2023-08-03

申请号：US17588707

申请日：2022-01-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M50/434 ,  H01M50/449

CPC classification number: H01M50/434 ,  H01M50/449

Abstract: The present disclosure provides a coated separator including a porous separator and a ceramic coating disposed on one or more surfaces thereof. The ceramic coating includes a ceramic material and an additive selected from the group consisting of: lithium nitrate (LiNO3), lithium phosphate (LiPO3), lithium orthophosphate (Li3PO4), lithium difluoro (oxalate) borate (LiDBoB), cyclic sulfone, polysulfide, lithium halide salts, and combinations thereof. In certain variations, the coated separator is prepared by contacting the porous separator with a slurry including the ceramic material and the additive. In other variations, the coated separator is prepared by forming a ceramic coating on one or more surfaces of a porous separator and contacting the porous separator with the additive, for example by immersing, or alternatively, a spraying process.