US 12,300,824 B2
Cell, cell stack device, module, and module housing device
Akihiro Hara, Kirishima (JP); and Yuuichi Hori, Kirishima (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 16/471,603
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Dec. 19, 2017, PCT No. PCT/JP2017/045517
§ 371(c)(1), (2) Date Jun. 20, 2019,
PCT Pub. No. WO2018/117098, PCT Pub. Date Jun. 28, 2018.
Claims priority of application No. 2016-246698 (JP), filed on Dec. 20, 2016.
Prior Publication US 2020/0099062 A1, Mar. 26, 2020
Int. Cl. H01M 4/90 (2006.01); C04B 35/486 (2006.01); H01M 4/86 (2006.01); H01M 8/12 (2016.01); H01M 8/1213 (2016.01); H01M 8/1253 (2016.01); H01M 8/249 (2016.01)
CPC H01M 4/9025 (2013.01) [H01M 8/249 (2013.01)] 19 Claims
OG exemplary drawing
 
19. A cell comprising:
an intermediate layer comprising a solid solution, the solid solution comprising CeO2 and second rare earth element oxide comprising a second rare earth element that is different from Ce;
a first electrode layer, the intermediate layer and then the first electrode layer being disposed in this order on a surface of one side of a solid electrolyte layer containing Zr; and
a second electrode layer disposed on a surface on another side opposite the surface of the one side of the solid electrolyte layer,
wherein
the intermediate layer structurally comprises a first layer and a second layer, the first layer located closer to the solid electrolyte layer than the second layer and the second layer disposed on the first layer and located closer to the first electrode layer than the first layer,
a concentration of the second rare earth element in the first layer is greater than a concentration of the second rare earth element in the second layer, and
the concentration of the second rare earth element of the first layer is in a range of 3 mass % to 8 mass %.