	US 12,451,505 B2
	Oxide ion-conducting solid electrolyte
Yoshitake Toda, Tokyo (JP); Satoru Tomeno, Tokyo (JP); Hiroshi Kaga, Tokyo (JP); and Kazuhiko Yamada, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Oct. 16, 2023, as Appl. No. 18/487,257.
Application 18/487,257 is a continuation of application No. PCT/JP2022/017864, filed on Apr. 14, 2022.
Claims priority of application No. 2021-075287 (JP), filed on Apr. 27, 2021.
Prior Publication US 2024/0047723 A1, Feb. 8, 2024
Int. Cl. H01M 8/1246 (2016.01); G01N 27/407 (2006.01); H01M 8/12 (2016.01)

CPC H01M 8/1246 (2013.01) [G01N 27/4073 (2013.01); H01M 2008/1293 (2013.01)]

8 Claims

1. An oxide ion-conducting solid electrolyte, comprising:

a mayenite-type compound having a representative composition of Ca₁₂Al₁₄O₃₃,

wherein the mayenite-type compound comprises 9 mol % to 30 mol % of Ti in terms of TiO₂, the Ti is positioned at an Al atom site, and a Ti/Al ratio of Ti atom to Al atom satisfies 0.15≤Ti/Al≤0.50.