公开(公告)号：US11302916B2

公开(公告)日：2022-04-12

申请号：US16491488

申请日：2017-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Lu ,  Michael P. Balogh ,  Zhiqiang Yu ,  Haijing Liu

IPC: H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/131

Abstract: An electrolyte can be pretreated by contacting with an oxide species (e.g., SiO2, SiOx, where 1≤x≤2, TiO2). The electrolyte comprises LiPF6 and a carbonate solvent. A reaction occurs to form a pretreated electrolyte comprising a compound selected from the group consisting of: MaPx′OyFz, MaPx′OyFzCnHm, and combinations thereof, where when P in the formula is normalized to 1 so that x′ is equal to about 1, 0

公开(公告)号：US11295901B2

公开(公告)日：2022-04-05

申请号：US16541811

申请日：2019-08-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Mark W. Verbrugge ,  Xiaochao Que ,  Qili Su ,  Meiyuan Wu

IPC: H01G9/00 ,  H01G9/022 ,  H01G11/06 ,  G02F1/1523 ,  H01M10/0525 ,  H01G11/24 ,  H01G11/02

Abstract: A bipolar capacitor-assisted solid-state battery is disclosed that includes a plurality of electrochemical battery unit cells, each of which includes a negative electrode, a positive electrode, and a lithium ion-conductive electrolyte-containing separator disposed between the negative electrode and the positive electrode. The lithium ion-conductive electrolyte-containing separator of each electrochemical battery unit cell comprises a solid-state electrolyte material, and, additionally, at least one negative electrode of the electrochemical battery unit cells or at least one positive electrode of the electrochemical battery unit cells includes a capacitor material. The bipolar capacitor-assisted solid-state battery further includes a bipolar current collector disposed between a negative electrode of one electrochemical battery unit cell and a positive electrode of an adjacent electrochemical battery unit cell. A method for manufacturing the disclosed bipolar capacitor-assisted solid-state battery is also disclosed.

公开(公告)号：US11264606B2

公开(公告)日：2022-03-01

申请号：US16491460

申请日：2017-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Lu ,  Michael P. Balogh ,  Zhiqiang Yu ,  Haijing Liu ,  Daad B. Haddad

IPC: H01M4/13915 ,  H01M4/1315 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M4/02

Abstract: Methods of pretreating an electroactive material comprising lithium titanate oxide (LTO) include contacting a surface of the electroactive material with a pretreatment composition. In one variation, the pretreatment composition includes a salt of lithium fluoride salt selected from the group consisting of: lithium hexafluorophosphate (LiPF6), lithium tetrafluoroborate (LiBF4), and combinations thereof, and a solvent. In another variation, the pretreatment composition includes an organophosphorus compound. In this manner, a protective surface coating forms on the surface of the electroactive material. The protective surface coating comprises fluorine, oxygen, phosphorus or boron, as well as optional elements such as carbon, hydrogen, and listed metals, and combinations thereof.

公开(公告)号：US20210066746A1

公开(公告)日：2021-03-04

申请号：US16559075

申请日：2019-09-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Dewen Kong ,  Yong Lu

IPC: H01M10/0562 ,  H01M10/0525

Abstract: In an embodiment, a softened solid-state electrolyte, comprises an oxide-based solid-state electrolyte, where at least a portion of the oxide anions in the oxide-based solid-state electrolyte is replaced with a replacement anion. In another embodiment, a softened solid-state electrolyte comprises a sulfide-based solid-state electrolyte, wherein at least a portion of the sulfide anions in the sulfide-based solid-state electrolyte is replaced with the replacement anion. When the replacement anion replaces the oxide anion, the replacement anion has a larger atomic radius than the oxide anion and when the replacement anion replaces the sulfide anion, the replacement anion has a larger atomic radius than the sulfide anion.

公开(公告)号：US20210050157A1

公开(公告)日：2021-02-18

申请号：US16541811

申请日：2019-08-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Mark W. Verbrugge ,  Xiaochao Que ,  Qili Su ,  Meiyuan Wu

IPC: H01G9/022 ,  H01G9/00 ,  H01G11/06 ,  H01G11/24 ,  G02F1/1523 ,  H01M10/0525

Abstract: A bipolar capacitor-assisted solid-state battery is disclosed that includes a plurality of electrochemical battery unit cells, each of which includes a negative electrode, a positive electrode, and a lithium ion-conductive electrolyte-containing separator disposed between the negative electrode and the positive electrode. The lithium ion-conductive electrolyte-containing separator of each electrochemical battery unit cell comprises a solid-state electrolyte material, and, additionally, at least one negative electrode of the electrochemical battery unit cells or at least one positive electrode of the electrochemical battery unit cells includes a capacitor material. The bipolar capacitor-assisted solid-state battery further includes a bipolar current collector disposed between a negative electrode of one electrochemical battery unit cell and a positive electrode of an adjacent electrochemical battery unit cell. A method for manufacturing the disclosed bipolar capacitor-assisted solid-state battery is also disclosed.

公开(公告)号：US20210021009A1

公开(公告)日：2021-01-21

申请号：US16684070

申请日：2019-11-14

Applicant: GM Global Technology Operations LLC

Inventor： Zhe Li ,  Xiaochao Que ,  Haijing Liu ,  Qili Su ,  Yong Lu

IPC: H01M16/00 ,  H01M10/0525 ,  H01M10/0566 ,  H01G11/08 ,  H01G11/10 ,  H01G11/36 ,  H01G11/56 ,  H01G11/50 ,  H01G11/06 ,  H01G11/46

Abstract: A solid-state battery cell having a capacitor interlayer is disclosed. The solid-state battery includes an anode, a cathode spaced from the anode, a solid-state electrolyte layer disposed between the anode and the cathode, and a capacitor assisted interlayer sandwiched between at least one of (i) the anode and solid-state electrolyte layer, and (ii) the cathode and the solid-state electrolyte layer. The capacitor assisted interlayer comprise at least one of a polymer-based material, an inorganic material, and a polymer-inorganic hybrid material; and a capacitor anode active material or a capacitor cathode active material. The polymer-based material includes at least one of a poly(ethylene glycol) methylether acrylate with Al2O3 and LiTFSI, a polyethylene oxide (PEO) with LiTFSI, and a poly(vinylidene fluoride) copolymer with hexafluoropropylene (PVDF-HFP)-based gel electrolyte. The inorganic material includes a 70% Li2S-29% P2S5-1% P2O5. The polymer-inorganic hybrid material includes a mixture of PEO, LiTFSI, and 75% Li2S-24% P2S5-1% P2O5 (LPOS).

公开(公告)号：US10826139B2

公开(公告)日：2020-11-03

申请号：US16013254

申请日：2018-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Dave G. Rich ,  Saad Hasan ,  Jeffrey Wyka ,  Jianfeng Wang ,  Dewen Kong ,  Haijing Liu

IPC: H01M10/617 ,  H01M2/10 ,  H01M10/625 ,  H01M10/6562 ,  H01M10/6556 ,  H01M2/18 ,  H01M10/6563 ,  B60R16/033 ,  H01M10/6572

Abstract: A battery enclosure shaped and sized to accept and surround a battery includes an outer case defining an aperture and having a base forming a bottom of the battery enclosure, the case having a first wall connected to a second wall, the second wall connected to a third wall, and a fourth wall portion connected to the first and third walls, each of the first, second, third, and fourth walls extending orthogonally from the base. The battery enclosure including a separable outer lid shaped to fit around the aperture of the case. The outer case and the outer lid having a material having thermal conductivity of less than about 0.3 W/mK, the battery enclosure has an air inlet selectively providing airflow to the battery enclosure and an air outlet selectively providing airflow from the battery enclosure, the outer case has a first thickness, the outer lid portion has a second thickness.

公开(公告)号：US20200279695A1

公开(公告)日：2020-09-03

申请号：US16646849

申请日：2018-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Yong Lu ,  Qili Su ,  Haijing Liu ,  Jingjing Wu

IPC: H01G11/06 ,  H01G11/62 ,  H01G11/46 ,  H01G11/50

Abstract: A battery having a plurality of electrodes immersed in a water-in-salt electrolytic solution is disclosed. The water-in-salt electrolytic solution includes a sufficient amount of a lithium salt disposed in an aqueous solvent, at least 14 moles of lithium salt per kg of aqueous solvent, such that a dissociated lithium ion is solvated by less than 4 water molecules. The plurality of electrodes includes a first type electrode, a second type electrode, and a third type electrode selectively assembled in a predetermined order of arrangement into an electrode stack assembly. The first type electrode includes an activated carbon, the second type electrodes include one of a lithium manganese oxide (LMO) and titanium dioxide (TiO2), and the third type electrodes include the other of the LMO and TiO2. The first type electrode may be that of a cathode and/or anode.

公开(公告)号：US10461318B2

公开(公告)日：2019-10-29

申请号：US15383118

申请日：2016-12-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sherman H. Zeng ,  Zhiqiang Yu ,  Dewen Kong ,  Haijing Liu

IPC: H01M4/1391 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/505

Abstract: A system for forming an electrode for a lithium-ion battery cell includes an electrode material, a material-supply mechanism, a wetting mechanism, a debris-generating tool, and a conditioner. The material-supply mechanism is configured to deliver the electrode material. The wetting mechanism is configured to receive the electrode material from the material-supply mechanism and apply a solution to the electrode material to produce a wet precursor. The debris-generating tool is configured to remove a portion of the electrode material from the wet precursor to form a pre-electrode. The conditioner is configured to eliminate the solution from the pre-electrode and thereby form the electrode.

公开(公告)号：US20190305285A1

公开(公告)日：2019-10-03

申请号：US15943065

申请日：2018-04-02

Applicant: GM Global technology Operations LLC

Inventor： Wu Tao ,  Li Sun ,  Xiaochao Que ,  Haijing Liu ,  Teresa J. Rinker ,  Jeffrey A. Abell

IPC: H01M2/26 ,  B23K26/00 ,  B23K26/22 ,  B23K26/32

Abstract: A method for laser welding a plurality of battery foils to a battery tab that does not include ultrasonic welding and includes clamping the plurality of battery foils and the battery tab together. Each of the plurality of battery foils has a thickness that is between 0.004 millimeters and 0.03 millimeters. The battery tab has a thickness that is between 0.1 millimeters and 0.5 millimeters. The method further includes laser welding the plurality of battery foils to the battery tab.