US 12,283,664 B2
Method for producing all solid state battery and all solid state battery
Kei Oura, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Feb. 12, 2024, as Appl. No. 18/438,927.
Application 18/118,441 is a division of application No. 17/091,687, filed on Nov. 6, 2020, granted, now 11,626,622, issued on Apr. 11, 2023.
Application 18/438,927 is a continuation of application No. 18/118,441, filed on Mar. 7, 2023, granted, now 12,095,041.
Claims priority of application No. 2019-205409 (JP), filed on Nov. 13, 2019.
Prior Publication US 2024/0186586 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0585 (2010.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01)
CPC H01M 10/0585 (2013.01) [H01M 4/0404 (2013.01); H01M 4/621 (2013.01); H01M 10/0562 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0068 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for producing an all solid state battery including a first current collector, a first active material layer, a solid electrolyte layer, a second active material layer and a second current collector stacked in this order, the method comprising:
a transferring step of transferring a transfer layer onto the first current collector by using a transfer member including a transfer foil and the transfer layer, the transferring step being included in a step of forming at least one layer of the first active material layer, the solid electrolyte layer, and the second active material layer, and
the transfer layer includes a binder, and in a thickness direction, a binder concentration of a surface portion on opposite side to the transfer foil is higher than a binder concentration of a surface portion on the transfer foil side,
the solid electrolyte layer contains a sulfide electrolyte.