| 摘要 |
PROBLEM TO BE SOLVED: To provide a monitor cell exhibiting power generation performance suitable for detecting occurrence of abnormality only during specific conditions.SOLUTION: A fuel cell stack is formed by laminating a plurality of unit cells. The plurality of unit cells include a monitor cell and a non-monitor cell. The fuel cell stack is configured so that a voltage generated from the non-monitor cell is larger than a voltage generated from the monitor cell, and the difference of the voltage generated from the non-monitor cell and the voltage generated from the monitor cell increases as the relative humidity of a reaction gas supplied to the monitor cell and non-monitor cell lowers. |
