| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid fuel cell system with high efficiency, capable of realizing the advantages of a phosphoric acid fuel cell and a solid polymer fuel cell, and compensating the disadvantages in the characteristics or operation of both fuel cells. SOLUTION: A phosphoric acid fuel cell and a solid polymer fuel cell are connected to a hydrogen supply device, hydrogen having a CO concentration of 1 vol.% or less is usually supplied from the hydrogen supply device to the phosphoric acid fuel cell, and in high rate operation, hydrogen whose CO concentration is reduced to 100 ppm or less with a PBA tower is supplied from the hydrogen supply device to the solid polymer fuel cell. |
