US 11,888,195 B2
Fuel cell power generation system
Yuzo Shirakawa, Tokyo (JP); and Takao Ishikawa, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Appl. No. 17/639,771
Filed by HITACHI, LTD., Tokyo (JP)
PCT Filed Mar. 26, 2020, PCT No. PCT/JP2020/013742
§ 371(c)(1), (2) Date Mar. 2, 2022,
PCT Pub. No. WO2021/192163, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2022/0336833 A1, Oct. 20, 2022
Int. Cl. H01M 8/0612 (2016.01); H01M 8/04014 (2016.01)
CPC H01M 8/0618 (2013.01) [H01M 8/04022 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fuel cell power generation system comprising:
an oxide-ion-conducting first fuel cell that performs reformation of a fuel containing hydrocarbon and power generation; and
a proton-conducting second fuel cell, coupled to the first fuel cell via an air pipe, that performs power generation by being supplied with hydrogen from the first fuel cell,
wherein the second fuel cell is connected downstream of the first fuel cell such that hydrogen emitted from the first fuel cell is fuel to the second fuel cell and air emitted from the first fuel cell is supplied to the second fuel cell via the air pipe.