US 11,791,497 B2
Solid-state battery and method for producing the same
Jun Yoshida, Mishima (JP); Shinya Shiotani, Toyota (JP); Masaru Kubota, Toyota (JP); Yohei Shindo, Toyota (JP); and Takeshi Usami, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Dec. 14, 2020, as Appl. No. 17/120,423.
Claims priority of application No. 2019-235590 (JP), filed on Dec. 26, 2019.
Prior Publication US 2021/0202987 A1, Jul. 1, 2021
Int. Cl. H01M 10/0562 (2010.01); H01M 4/48 (2010.01); H01M 10/44 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/483 (2013.01); H01M 10/446 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0068 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A solid-state battery comprising:
a cathode comprising a cathode layer that contains an oxide-based cathode active material, an anode comprising an anode layer that contains an anode active material, and a solid electrolyte layer being disposed between the cathode layer and the anode layer and containing a solid electrolyte,
wherein at least any one of the cathode layer and the solid electrolyte layer contains a sulfide-based solid electrolyte, and
wherein, when TEM-EDX analysis is performed, the sulfide-based solid electrolyte comprises a high oxygen concentration layer on a contact surface with the oxide-based cathode active material, the high oxygen concentration layer having a higher oxygen element concentration than other parts except the contact surface.