公开(公告)号：US20170058389A1

公开(公告)日：2017-03-02

申请号：US15308860

申请日：2014-05-12

Applicant: Jianyong LIU ,  GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaohong Q. Gayden ,  Jianyong Liu ,  Zhiqiang Yu ,  Haijing Liu ,  Qiang Wu

IPC: C23C4/134 ,  H01M10/0525 ,  C23C4/11 ,  H01M4/04 ,  H01M4/62 ,  H01M4/133 ,  H01M4/134 ,  H01M4/131 ,  C23C4/06 ,  H01M4/66

CPC classification number: C23C4/134 ,  C23C4/01 ,  C23C4/06 ,  C23C4/11 ,  H01M4/0404 ,  H01M4/0407 ,  H01M4/0419 ,  H01M4/0421 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/139 ,  H01M4/364 ,  H01M4/621 ,  H01M4/626 ,  H01M4/661 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/20

Abstract: A first atmospheric plasma producing nozzle is used to direct a gas-borne stream of plasma heated and activated particles of lithium battery electrode material for deposition on a surface of lithium cell member, such as a separator or current collector foil. A second atmospheric plasma producing nozzle is used to direct a gas-borne stream of plasma heated and activated metal particles at the same surface area being coated with the stream of electrode material particles. The two plasma streams are combined at the cell member surface to form a layer of electrically-conductive metal-bonded particles of electrode material. The use of multiple atmospheric plasma streams is useful in making thin, efficient, and lower cost electrode structures for lithium batteries.

Abstract translation: 第一大气等离子体产生喷嘴用于引导锂离子电池电极材料的等离子体加热和活化的颗粒的气体流，以便沉积在诸如隔膜或集电箔之类的锂电池构件的表面上。 使用第二大气等离子体产生喷嘴来引导等离子体加热和活化的金属颗粒的气体流在被电极材料颗粒流涂覆的相​​同表面区域。 两个等离子体流在电池元件表面处组合以形成电极材料的导电金属键合颗粒层。 使用多个大气等离子体流可用于制造用于锂电池的薄的，有效的和较低成本的电极结构。

公开(公告)号：US09929445B2

公开(公告)日：2018-03-27

申请号：US15100409

申请日：2013-12-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Haijing Liu ,  Xiaochao Que ,  Qiang Wu

IPC: H01M4/00 ,  H01M10/48 ,  H01M2/02 ,  H01M4/485 ,  H01M4/58 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/131 ,  H01M4/136 ,  H01M4/80 ,  H01M10/04 ,  H01M4/02

CPC classification number: H01M10/48 ,  H01M2/021 ,  H01M4/131 ,  H01M4/136 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/661 ,  H01M4/80 ,  H01M10/0445 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2004/021 ,  Y02T10/7011

Abstract: Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. In this disclosure, such battery pouches are prepared to contain a stacked grouping of inter-layered and interconnected anodes, cathodes, and separators, each wetted with a liquid electrolyte. A pair of reference electrodes is combined in a specific arrangement with other cell members to enable accurate assessment of both anode group and cathode group performance, and to validate and regenerate reference electrode capability.

公开(公告)号：US20160308260A1

公开(公告)日：2016-10-20

申请号：US15100409

申请日：2013-12-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Haijing Liu ,  Xiaochao Que ,  Qiang Wu

IPC: H01M10/48 ,  H01M10/0525 ,  H01M4/66 ,  H01M2/02 ,  H01M4/58 ,  H01M4/485 ,  H01M4/136 ,  H01M4/131 ,  H01M10/0585 ,  H01M4/80

CPC classification number: H01M10/48 ,  H01M2/021 ,  H01M4/131 ,  H01M4/136 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/661 ,  H01M4/80 ,  H01M10/0445 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2004/021 ,  Y02T10/7011

Abstract: Some lithium-ion batteries are assembled using a plurality of electrically interconnected battery pouches to obtain the electrical potential and power requirements of the battery application. In this disclosure, such battery pouches are prepared to contain a stacked grouping of inter-layered and interconnected anodes, cathodes, and separators, each wetted with a liquid electrolyte. A pair of reference electrodes is combined in a specific arrangement with other cell members to enable accurate assessment of both anode group and cathode group performance, and to validate and regenerate reference electrode capability.

Abstract translation: 一些锂离子电池使用多个电互连的电池袋组装以获得电池应用的电位和功率要求。 在本公开中，这样的电池袋被制备成包含层叠和互连的阳极，阴极和隔板的组合，每个阳极，阴极和隔板都用液体电解液润湿。 一对参考电极以特定布置与其它单元构件组合，以便能够准确地评估阳极组和阴极组性能，并验证和再生参考电极能力。

公开(公告)号：US10418668B2

公开(公告)日：2019-09-17

申请号：US15644444

申请日：2017-07-07

Applicant: GM Global Technology Operations LLC

Inventor： Qiang Wu ,  Zhiqiang Yu ,  Haijing Liu ,  Honggu Pan ,  Ion C. Halalay

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569 ,  H01M10/0568

Abstract: Electrochemical cells that cycle lithium ions and methods for suppressing or minimizing dendrite formation are provided. The electrochemical cells include a positive electrode, a negative electrode, and a separator sandwiched therebetween. The positive and negative electrodes and separator may each include an electrolyte system comprising one or more lithium salts, one or more solvents, and one or more complexing agents. The one or more complexing agents binds to metal contaminants found within the electrochemical cell to form metal ion complex compounds that minimize or suppress formation of dendrite protrusions on the negative electrode at least by increasing the horizontal area (e.g., decreasing the height) of any dendrite formation.

公开(公告)号：US20170121807A1

公开(公告)日：2017-05-04

申请号：US15129886

申请日：2014-04-02

Applicant: Suxiang Deng ,  GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suxiang Deng ,  Xiaohong Q. Gayden ,  Qiang Wu ,  Zhiqiang Yu ,  Haijing Liu ,  Dewen Kong

IPC: C23C4/134 ,  C23C4/11 ,  H01M10/0525 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/62 ,  C23C4/06 ,  H01M4/04

CPC classification number: C23C4/134 ,  C23C4/04 ,  C23C4/06 ,  C23C4/11 ,  H01M4/0404 ,  H01M4/0407 ,  H01M4/0419 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/626 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20

Abstract: Layers of particles of positive or negative electrode materials for lithium-secondary cells are deposited on porous separator layers or current collector films using atmospheric plasma practices for the deposition of the electrode material particles. Before the deposition step, the non-metallic electrode material particles are coated with smaller particles of an elemental metal. The elemental metal is compatible with the particulate electrode material in the operation of the electrode and the metal particles are partially melted during the atmospheric deposition step to bond the electrode material particles to the substrate and to each other in a porous layer for infiltration with a liquid lithium ion-containing electrolyte. And the metal coating on the particles provides suitable electrical conductivity to the electrode layer during cell operation.

公开(公告)号：US20190013552A1

公开(公告)日：2019-01-10

申请号：US15644444

申请日：2017-07-07

Applicant: GM Global Technology Operations LLC

Inventor： Qiang Wu ,  Zhiqiang Yu ,  Haijing Liu ,  Honggu Pan ,  Ion C. Halalay

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569 ,  H01M10/0568

CPC classification number: H01M10/4235 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/004

Abstract: Electrochemical cells that cycle lithium ions and methods for suppressing or minimizing dendrite formation are provided. The electrochemical cells include a positive electrode, a negative electrode, and a separator sandwiched therebetween. The positive and negative electrodes and separator may each include an electrolyte system comprising one or more lithium salts, one or more solvents, and one or more complexing agents. The one or more complexing agents binds to metal contaminants found within the electrochemical cell to form metal ion complex compounds that minimize or suppress formation of dendrite protrusions on the negative electrode at least by increasing the horizontal area (e.g., decreasing the height) of any dendrite formation.

公开(公告)号：US20180277826A1

公开(公告)日：2018-09-27

申请号：US15525111

申请日：2014-11-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaohong Q. Gayden ,  Zhiqiang Yu ,  Qiang Wu

IPC: H01M4/04 ,  H01M4/139 ,  H01M4/62 ,  H01M10/0525 ,  C23C4/134

CPC classification number: H01M4/0419 ,  C23C4/134 ,  H01M4/139 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  Y02T10/7011

Abstract: An atmospheric plasma spray device is used to direct a stream of plasma-heated, particulate, lithium battery electrode materials to form a porous layer of the electrode particles on a surface of a compatible current collector metal foil. Subsequently, a non-plasma spray device is used to direct a stream of droplets of an aqueous solution of a polymeric binder material onto and into the porous layer of electrode particles. Water evaporates from the droplets of binder solution as the droplets infiltrate the porous electrode material and coat the electrode particles and current collector surface. When the water (or other solvent) has evaporated from the dispersed droplets of polymer material, the polymer binder bonds the particles to each other and to the current collector surface. The polymer spray may immediately follow the deposition of the electrode particles, or follow later, even at a downstream spray location.