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：US11430981B2

公开(公告)日：2022-08-30

申请号：US16661332

申请日：2019-10-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H01M4/36 ,  H01M4/48 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/02

Abstract: A material including TiO2 nanoparticles at least partially embedded in a matrix material of TixNbyOz, where 0

公开(公告)号：US11121375B2

公开(公告)日：2021-09-14

申请号：US16159799

申请日：2018-10-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mengyan Hou ,  Zhe Li ,  Dewen Kong ,  Haijing Liu ,  Qili Su

IPC: H01M4/62 ,  H01M4/485 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/40

Abstract: Individual electrodes for a solid-state lithium-ion battery cell may be formed, for example, by elevated temperature consolidation in air of a mixture of resin-bonded, electrode active material particles, oxide solid electrolyte particles, and particles of a non-carbon electronic conductive additive. Depending on the selected compositions of the electrode materials and the solid electrolyte, one or both of the cathode and anode layer members may be formed to include the non-carbon electronic conductive additive. The battery cell is assembled with the solid-state electrodes placed on opposite sides of a consolidated layer of oxide electrolyte particles. The electronic conductivity of at least one of the cathode and anode is increased by the incorporation of particles of a selected non-carbon electronic conducive additive with the respective electrode particles.

公开(公告)号：US20210036310A1

公开(公告)日：2021-02-04

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

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.