公开(公告)号：US10593931B2

公开(公告)日：2020-03-17

申请号：US15862023

申请日：2018-01-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keegan Adair ,  Fang Dai ,  Mei Cai

IPC: H01M4/131 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/134 ,  H01M4/66 ,  H01M4/04 ,  H01M10/052 ,  H01M4/38 ,  H01M4/62 ,  H01M4/80 ,  H01M4/74

Abstract: An electrochemical cell comprising a lithium metal negative electrode layer physically and chemically bonded to a surface of a negative electrode current collector via an intermediate metal chalcogenide layer. The intermediate metal chalcogenide layer may comprise a metal oxide, a metal sulfide, a metal selenide, or a combination thereof. The intermediate metal chalcogenide layer may be formed on the surface of the negative electrode current collector by exposing the surface to a chalcogen in gas phase. Then, the lithium metal negative electrode layer may be formed on the surface of the negative electrode current collector over the intermediate metal chalcogenide layer by contacting at least a portion of the metal chalcogenide layer with a source of lithium such that the lithium actively wets the metal chalcogenide layer and forms a conformal lithium metal layer on the surface of the negative electrode current collector over the metal chalcogenide layer.

公开(公告)号：US10476105B2

公开(公告)日：2019-11-12

申请号：US15681142

申请日：2017-08-18

Applicant: GM Global Technology Operations LLC

Inventor： Fang Dai ,  Mahmoud Abd Elhamid ,  Mei Cai ,  Anne M. Dailly ,  Robert M. Lapierre

IPC: H01M10/0565 ,  C01D15/00 ,  C08G65/16 ,  H01M6/18 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

Abstract: Systems and methods of providing self-healing gel-type electrolyte composites for metal batteries are disclosed. According to aspects of the disclosure, a method includes preparing a ternary mixture including an electrolyte portion, a matrix precursor portion, and a self-healing portion, forming a self-healing gel-electrolyte membrane by initiating polymerization of the gel-forming precursor and the gel-forming initiator to thereby form a polymer matrix, and disposing the self-healing gel-electrolyte membrane between an anode and a cathode. The self-healing portion includes a self-healing precursor that is flowable and a self-healing initiator. The matrix precursor portion includes a gel-forming precursor and a gel-forming initiator. The electrolyte portion and the self-healing portion are disposed substantially throughout the polymer matrix and the polymer matrix includes a plurality of gel-forming active sites.

公开(公告)号：US20190329353A1

公开(公告)日：2019-10-31

申请号：US15967079

申请日：2018-04-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Hongliang Wang ,  Wayne Cai ,  Mei Cai

IPC: B23K26/21 ,  H01M10/052 ,  H01M4/38 ,  H01M4/1395 ,  H01M4/04

Abstract: A negative electrode for an electrochemical cell of a lithium metal battery may be manufactured by joining together a metallic current collector piece and a lithium metal piece. The metallic current collector piece may be positioned adjacent the lithium metal piece in an at least partially lapped configuration at a weld site. A laser beam may be directed at an upper surface of the metallic current collector piece at the weld site to melt a portion of the lithium metal piece adjacent the metallic current collector piece and produce a lithium metal molten weld pool. The second laser beam may be terminated to solidify the lithium metal molten weld pool into a solid weld joint that physically bonds the lithium metal piece and the metallic current collector piece together at the weld site.

公开(公告)号：US20190312255A1

公开(公告)日：2019-10-10

申请号：US15949609

申请日：2018-04-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Hongliang Wang ,  Wayne Cai ,  Mei Cai ,  Michael P. Balogh

IPC: H01M4/04 ,  H01M4/66 ,  H01M4/38 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052 ,  B23K26/22 ,  B23K26/354

Abstract: A negative electrode for an electrochemical cell of a lithium metal battery may be manufactured by welding together a lithium metal layer and a metallic current collector layer. The lithium metal layer and the current collector layer may be arranged adjacent one another and in an at least partially lapped configuration such that faying surfaces of the layers confront one another and establish a faying interface therebetween at a weld site. A laser beam may be directed at an outer surface of the current collector layer at the weld site to melt a portion of the lithium metal layer adjacent the faying surface of the current collector layer and produce a lithium metal molten weld pool. The laser beam may be terminated to solidify the molten weld pool into a solid weld joint that physically bonds the lithium metal layer and the current collector layer together at the weld site.

公开(公告)号：US20190207245A1

公开(公告)日：2019-07-04

申请号：US15862187

申请日：2018-01-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keegan Adair ,  Fang Dai ,  Mei Cai

IPC: H01M10/058 ,  H01M10/04 ,  H01M4/04 ,  H01M4/66 ,  H01M2/14

Abstract: A method of manufacturing an electrochemical cell may comprise exposing a surface of a metal substrate to a chalcogen in gas phase such that a metal chalcogenide layer forms on the surface of the metal substrate. A lithium metal foil may be laminated onto the metal chalcogenide layer on the surface of the metal substrate such that a surface of the lithium metal foil physically and chemically bonds to the metal chalcogenide layer on the surface of the metal substrate.

公开(公告)号：US20190058215A1

公开(公告)日：2019-02-21

申请号：US15681142

申请日：2017-08-18

Applicant: GM Global Technology Operations LLC

Inventor： Fang Dai ,  Mahmoud Abd Elhamid ,  Mei Cai ,  Anne M. Dailly ,  Robert M. Lapierre

IPC: H01M10/0565 ,  C01D15/00 ,  C08G65/16 ,  H01M6/18

CPC classification number: H01M10/0565 ,  C01D15/00 ,  C08G65/16 ,  H01M6/181 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2300/0085

Abstract: Systems and methods of providing self-healing gel-type electrolyte composites for metal batteries are disclosed. According to aspects of the disclosure, a method includes preparing a ternary mixture including an electrolyte portion, a matrix precursor portion, and a self-healing portion, forming a self-healing gel-electrolyte membrane by initiating polymerization of the gel-forming precursor and the gel-forming initiator to thereby form a polymer matrix, and disposing the self-healing gel-electrolyte membrane between an anode and a cathode. The self-healing portion includes a self-healing precursor that is flowable and a self-healing initiator. The matrix precursor portion includes a gel-forming precursor and a gel-forming initiator. The electrolyte portion and the self-healing portion are disposed substantially throughout the polymer matrix and the polymer matrix includes a plurality of gel-forming active sites.

公开(公告)号：US10084204B2

公开(公告)日：2018-09-25

申请号：US14803632

申请日：2015-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fang Dai ,  Mei Cai ,  Qiangfeng Xiao ,  Li Yang

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/052 ,  H01M4/38 ,  H01M4/58

CPC classification number: H01M10/0567 ,  H01M4/386 ,  H01M4/581 ,  H01M4/5815 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0028 ,  H01M2300/0037

Abstract: An example of an electrolyte solution includes a solvent, a lithium salt, a fluorinated ether, and an additive. The additive is selected from the group consisting of RSxR′, wherein x ranges from 3 to 18, and R—(SnSem)—R, wherein 2

公开(公告)号：US20180108952A1

公开(公告)日：2018-04-19

申请号：US15295600

申请日：2016-10-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Li Yang ,  Mei Cai ,  Martin S. Ruthkosky ,  Fang Dai

IPC: H01M10/48 ,  H01M10/0525

Abstract: An example of a three-electrode test cell includes a negative electrode, a positive electrode having an aperture defined therein, a reference electrode, and a first microporous polymer separator soaked in an electrolyte. The reference electrode is disposed within the aperture of the positive electrode and physically separated from the positive electrode. The first microporous polymer separator is disposed between the negative electrode and the positive electrode.

公开(公告)号：US09859554B2

公开(公告)日：2018-01-02

申请号：US14323727

申请日：2014-07-03

Applicant: GM Global Technology Operations LLC

Inventor： Qiangfeng Xiao ,  Mei Cai ,  Li Yang ,  Fang Dai ,  Meng Jiang

IPC: H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  H01M4/628 ,  H01M10/052 ,  H01M2004/021 ,  Y02T10/7011

Abstract: A negative electrode material includes an active material. The active material includes a silicon core selected from the group consisting of Si, SiO2, SiOx (0

公开(公告)号：US20170326972A1

公开(公告)日：2017-11-16

申请号：US15152254

申请日：2016-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingmei Shen ,  Anne M. Dailly ,  Fang Dai ,  Mei Cai

IPC: B60K15/03 ,  B01J20/20 ,  C10L3/06 ,  B01J20/22

Abstract: An adsorption storage tank for a natural gas includes a pressurizable tank disposed on a vehicle to contain the natural gas. A natural gas adsorbent is disposed in the tank. The natural gas is a mixture of constituents having a constituent statistical distribution of molecule lengths and kinetic diameters. The adsorbent has a pore size statistical distribution of pore sizes to adsorb and desorb the mixture of constituents.