US 11,942,620 B2
Solid state battery with uniformly distributed electrolyte, and methods of fabrication relating thereto
Yong Lu, Shanghai (CN); Zhe Li, Shanghai (CN); Xiaochao Que, Shanghai (CN); Haijing Liu, Shanghai (CN); and Meiyuan Wu, Shanghai (CN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Dec. 6, 2021, as Appl. No. 17/543,160.
Claims priority of application No. 202011416215.3 (CN), filed on Dec. 7, 2020.
Prior Publication US 2022/0181598 A1, Jun. 9, 2022
Int. Cl. H01M 4/04 (2006.01)
CPC H01M 4/0416 (2013.01) [H01M 2300/0068 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for preparing a solid-state electrochemical cell having one or more solid-state electrodes and a distributed solid-state electrolyte, the method comprising:
preparing the one or more solid-state electrodes by disposing a solid-state electroactive material layer adjacent to a current collector, the solid-state electroactive material layer comprising a plurality solid-state electroactive particles;
punching a plurality of apertures into the one or more solid-state electrodes, the plurality of apertures extending continuously through the solid-state electroactive material layer and the current collector;
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.