US 9,812,726 B2
Solid oxide fuel cell, fuel cell module, and fuel cell device
Shushin Inoue, Yokohama (JP)
Assigned to KYOCERA Corporation, Kyoto-shi, Kyoto (JP)
Appl. No. 14/374,935
Filed by KYOCERA Corporation, Kyoto-shi, Kyoto (JP)
PCT Filed Jan. 30, 2013, PCT No. PCT/JP2013/052053
§ 371(c)(1), (2) Date Jul. 28, 2014,
PCT Pub. No. WO2013/115255, PCT Pub. Date Aug. 8, 2013.
Claims priority of application No. 2012-016744 (JP), filed on Jan. 30, 2012.
Prior Publication US 2014/0377683 A1, Dec. 25, 2014
Int. Cl. H01M 8/12 (2016.01); H01M 8/1213 (2016.01); H01M 8/1246 (2016.01); H01M 8/0297 (2016.01); H01M 8/124 (2016.01); H01M 8/1253 (2016.01); H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 8/1004 (2016.01); H01M 8/2425 (2016.01); H01M 8/2475 (2016.01)
CPC H01M 8/12 (2013.01) [H01M 4/8657 (2013.01); H01M 4/9033 (2013.01); H01M 8/0297 (2013.01); H01M 8/1004 (2013.01); H01M 8/124 (2013.01); H01M 8/1213 (2013.01); H01M 8/1246 (2013.01); H01M 8/1253 (2013.01); H01M 8/2425 (2013.01); H01M 8/2475 (2013.01); H01M 2008/1293 (2013.01); Y02E 60/525 (2013.01); Y02P 70/56 (2015.11)] 8 Claims
OG exemplary drawing
 
1. A solid oxide fuel cell, comprising:
a solid electrolyte layer;
a fuel electrode layer that is disposed on one surface of the solid electrolyte layer;
an oxygen electrode layer that is disposed on the other surface of the solid electrolyte layer; and
an intermediate layer that is disposed between the solid electrolyte layer and the oxygen electrode layer and that includes ceria-based particles containing rare earth elements other than cerium, and ceramic particles consisting of oxide of a metallic element different from that of the ceria-based particles, wherein the ceramic particles having a smaller average particle diameter than that of the ceria-based particles exist in grain boundaries of the ceria-based particles of the intermediate layer and wherein the ceramic particles consist of at least one of alumina, titania, and iron oxide,
wherein the intermediate layer has a porosity in a range from 20 percent to 40 percent.