公开(公告)号：US20220181598A1

公开(公告)日：2022-06-09

申请号：US17543160

申请日：2021-12-06

Applicant: GM Global Technology Operations LLC

Inventor： Yong LU ,  Zhe LI ,  Xiaochao QUE ,  Haijing LIU ,  Meiyuan WU

IPC: H01M4/04

Abstract: The present disclosure relates to a solid-state electrochemical cell having a uniformly distributed solid-state electrolyte and methods of fabrication relating thereto. The method may include forming a plurality of apertures within the one or more solid-state electrodes; impregnating the one or more solid-state electrodes with a solid-state electrolyte precursor solution so as to fill the plurality of apertures and any other void or pores within the one or more electrodes with the solid-state electrolyte precursor solution; and heating the one or more electrodes so as to solidify the solid-state electrolyte precursor solution and to form the distributed solid-state electrolyte.

公开(公告)号：US20220123352A1

公开(公告)日：2022-04-21

申请号：US17481179

申请日：2021-09-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Yong LU ,  Qili SU ,  Meiyuan WU ,  Haijing LIU

IPC: H01M10/056 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/66

Abstract: A high-temperature stable solid-state bipolar battery is provided. The battery includes two or more electrodes, one or more solid-state electrolyte layers, and an ionogel disposed within void spaces within the battery. Each electrode includes a plurality of solid-state electroactive particles. Each solid-state electrolyte layer includes a plurality of solid-state electrolyte particles and a first solid-state electrolyte layer of the one or more solid-state electrolyte layers may be disposed between a first electrode and a second electrode of the two or more electrodes. The ionogel is disposed within void spaces between the two or more electrodes, the solid-state electroactive particles of the two or more electrodes, the solid-state electrolyte particles of the one or more solid-state electrolyte layers, and the one or more solid-state electrolyte layers, such that the battery has an reduced interparticle porosity. The ionogel may have an ionic conductivity between about 0.1 mS/Cm and about 10 mS/cm.

公开(公告)号：US20210273229A1

公开(公告)日：2021-09-02

申请号：US16802898

申请日：2020-02-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yucong WANG ,  Zhe LI ,  Jing GAO ,  Brian J. KOCH

IPC: H01M4/66 ,  H01M4/131 ,  H01M10/0525 ,  H01M2/16

Abstract: Composite reference electrode substrates and relating methods are provided. The composite reference electrode substrate includes a separator portion and a current collector portion adjacent to the separator portion. A method for forming the reference electrode substrate includes anodizing one or more surfaces of a first side of an aluminum foil so as to form a porous separator portion disposed adjacent to a porous current collector portion. The porous separator portion includes aluminum oxide, and the current collector portion includes the aluminum foil. The separator portion and the current collector portion each have a porosity of greater than or equal to about 10 vol. % to less than or equal to about 80 vol. %.

公开(公告)号：US20210091424A1

公开(公告)日：2021-03-25

申请号：US16577934

申请日：2019-09-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jing GAO ,  Brian J. KOCH ,  Zhe LI ,  Alfred ZHANG ,  Gayatri V. DADHEECH

IPC: H01M10/48 ,  B05D1/00

Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.