| 摘要 |
PROBLEM TO BE SOLVED: To prevent corrosion of metal parts such as pipe fittings in connection with a fuel cell stack. SOLUTION: A fuel cell stack 10 has many single cells 30 which perform power generation using the methanol solution and air. A plurality of single cells 30 are laminated in the vertical direction. An inlet of a fuel supply manifold 100 for distributing the methanol solution to each of the single cells 30 and an outlet of a fuel discharge manifold 110 for recovering the fuel discharged from each of the single cells 30 are attached to an end plate 80a having the common conductivity. When the fuel discharged from the fuel cell stack 10 is circulated to be supplied back to the fuel cell stack 10, therefore, the potential of the fuel discharged from the fuel cell stack 10 is made equal to that of the liquid fuel supplied to the fuel cell stack 10, thereby preventing corrosion of metal parts such as pipe fittings or the like. COPYRIGHT: (C)2007,JPO&INPIT
|
