| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of activating a fuel cell in which activation time is drastically condensed so that an amount of hydrogen is decreased and no additional device is necessary. <P>SOLUTION: The method of activating the fuel cell sequentially performs: (1) a first step of maintaining cell voltage in a constant level of open circuit voltage (OCV) (or in a lower constant level than the OCV), supplying hydrogen to a fuel electrode and air to an air electrode; (2) a second step of blocking air supply to the air electrode, continuing hydrogen supply to the fuel electrode; (3) a third step of lowering the cell voltage from the OCV to the lowest input voltage; (4) a fourth step of raising the cell voltage to the constant level of the OCV (or the lower constant level than the OCV), supplying again air to the air electrode; (5) a fifth step of driving the fuel cell by constant current, or a constant voltage driving mode, sufficiently supplying hydrogen to the fuel electrode and air to the air electrode; and (6) a sixth step of repeating several times the steps of the first to the fifth. <P>COPYRIGHT: (C)2010,JPO&INPIT |
