公开(公告)号：US11973226B2

公开(公告)日：2024-04-30

申请号：US17084782

申请日：2020-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Haijing Liu ,  Qili Su ,  Xiaochao Que

IPC: H01M10/18 ,  H01M4/62 ,  H01M50/531 ,  H01M4/02

CPC classification number: H01M4/62 ,  H01M50/531 ,  H01M2004/029

Abstract: A hybrid electrochemical device including at least two electrically connected solid-state electrochemical cells is provided. Each electrochemical cell includes a first outer electrode having a first current collector and a first electroactive layer, a second outer electrode having a second current collector and a second electroactive layer, and one or more intervening electrodes disposed between the electroactive layers. At least one of the intervening electrodes includes one or more capacitor additives. The first outer electrode is electrically connected to at least one of the intervening electrodes in a first electrical configuration. The second outer electrode is electrically connected to at least one of the intervening electrodes in a second electrical configuration. The at least two electrochemical cells are electrically connected in a third electrical configuration. The first and second electrical configurations are the same and the third electrical configuration is distinct from the first and second electrical configurations.

公开(公告)号：US11575122B2

公开(公告)日：2023-02-07

申请号：US16598244

申请日：2019-10-10

Applicant: GM Global Technology Operations LLC

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

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M10/052 ,  H01M10/0585 ,  H01M4/04

Abstract: An anode electrode with enhanced state of charge estimation is provided. The anode electrode comprises anode layer and a negative current collector. The negative current collector has a first side and a second side. The anode layer comprises lithium-titanium oxide and a second anode material (e.g. niobium-titanium oxide) disposed on at least one of the first and second sides of the negative current collector with single-layer or layer-by-layer coated structures. The second anode material (e.g. niobium-titanium oxide) can be physically blended with lithium-titanium oxide or be at least partially coated on the surface of lithium-titanium oxide or their combinations. The anode electrode further comprises a binder and a conductive carbon.

公开(公告)号：US11575120B2

公开(公告)日：2023-02-07

申请号：US16598237

申请日：2019-10-10

Applicant: GM Global Technology Operations LLC

Inventor： Mengyan Hou ,  Zhe Li ,  Qili Su ,  Xiaochao Que ,  Meiyuan Wu

IPC: H01M4/36 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

Abstract: An electrode including micro-sized secondary particle (MSSP) with enhanced ionic conductivity for solid-state battery is provided. The MSSP comprises a cathode particle and a solid-state electrolyte. The cathode particle is at least partially coated by solid-state electrolyte. The lithium ion transport inside the micro-sized secondary particles is increased by the incorporation of solid-state electrolyte. The electrode can be prepared by casting the slurry comprising MSSP, another electrolyte, binders, and conductive additives on the current collector. The current collector is comprised of a conductive material. The current collector has a first side and a second side. The electrode active material layer is disposed on one of the first and second sides of the current collector.

公开(公告)号：US11374257B2

公开(公告)日：2022-06-28

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：US11967722B2

公开(公告)日：2024-04-23

申请号：US17560673

申请日：2021-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Zhe Li ,  Meiyuan Wu ,  Mengyan Hou ,  Haijing Liu

IPC: H01M4/78 ,  H01M4/02

CPC classification number: H01M4/78 ,  H01M2004/029

Abstract: A battery includes positive and negative current collectors and a plurality of bipolar electrodes arranged in a stack between the positive and negative current collectors. The positive and negative current collectors and the stack of the plurality of bipolar electrodes are folded in an S-shape.

公开(公告)号：US20210050596A1

公开(公告)日：2021-02-18

申请号：US16817012

申请日：2020-03-12

Applicant: GM Global Technology Operations LLC

Inventor： Zhe Li ,  Haijing Liu ,  Yong Lu ,  Mengyan Hou ,  Deween Kong

IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/485 ,  H01M4/131

Abstract: A solid-state battery cell for a lithium ion battery is disclosed. The battery cell includes a first electrode; a second electrode; and an ionically conductive layer sandwiched between the first electrode and the second electrode. At least one of the first electrode and the second electrode includes an electronically conductive polymer (ECP). The at least one of the first electrode and the second electrode comprises about 20-98 weight percent (wt %) of an active material, about 0.1-30 wt % of the ECP, and about 5-70 wt % of an ionically conductive material that includes one or more of a solid-state electrolyte (SSE) material and a lithium salt.

公开(公告)号：US20210036385A1

公开(公告)日：2021-02-04

申请号：US16598244

申请日：2019-10-10

Applicant: GM Global Technology Operations LLC

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

IPC: H01M10/48 ,  H01M10/0525 ,  H01M4/1391 ,  H01M4/131

Abstract: An anode electrode with enhanced state of charge estimation is provided. The anode electrode comprises anode layer and a negative current collector. The negative current collector has a first side and a second side. The anode layer comprises lithium-titanium oxide and a second anode material (e.g. niobium-titanium oxide) disposed on at least one of the first and second sides of the negative current collector with single-layer or layer-by-layer coated structures. The second anode material (e.g. niobium-titanium oxide) can be physically blended with lithium-titanium oxide or be at least partially coated on the surface of lithium-titanium oxide or their combinations. The anode electrode further comprises a binder and a conductive carbon.

公开(公告)号：US20210028481A1

公开(公告)日：2021-01-28

申请号：US16523324

申请日：2019-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M10/04 ,  H01M10/0525 ,  H01M4/36 ,  H01G11/32 ,  H01G11/46

Abstract: A bipolar battery may comprise first, second, and third bipolar electrodes that are physically and electrically isolated from one another by intervening non-liquid electrolyte layers. Each of the bipolar electrodes may comprise a bipolar current collector including a first electroactive material layer connected to a first side thereof and a second electroactive material layer connected to a second side thereof. Each electroactive material layer may comprise at least one of: (i) a lithium ion battery positive electrode material, (ii) a lithium ion battery negative electrode material, and/or (iii) a capacitor electrode material. At least one of the electroactive material layers comprises a capacitor electrode material.

公开(公告)号：US11651906B2

公开(公告)日：2023-05-16

申请号：US17069932

申请日：2020-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Haijing Liu ,  Meiyuan Wu ,  Dewen Kong ,  Mengyan Hou

IPC: H01G11/08 ,  H01G11/32 ,  H01G11/46 ,  H01G11/04

CPC classification number: H01G11/08 ,  H01G11/04 ,  H01G11/32 ,  H01G11/46

Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes. In a first operational state corresponding to charging, the at least one voltage modification component is configured to induce a voltage drop corresponding to the predetermined voltage difference providing high power density and high energy density hybrid lithium-ion electrochemical cells.

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.