| 摘要 |
PURPOSE:To humidify anode gas effectively with no degradation of the SPEC performance and the life time of a fuel cell, by supplying water to the anode gas through a porous film made of ethylene tetrafluoride resin. CONSTITUTION:In an electrolyte type fuel cell 1, a solid macromolecular electrolyte film 2, an anode 3, a cathode 4 and a porous film 9 made of ethylene tetrafluoride resin, or the like are provided respectively. Water is supplied to an intake 11 in liquid state, and stored in a porous body 10. On the other hand, on the surface of the porous film 9 contacted to the anode gas, because of large interfacial area of gas and liquid, a large amount of water is evaporated to be supplied to the anode gas, and lacking water is supplied to the porous film 9 from the porous body 10 by moving in liquid state. The porous film 9 is able to store liquid water even at a high temperature, for instance, of near 100 deg.C, and to prevent the leakage of liquid water to the anode gas side by the volatility, and because of large surface area of the porous film 9 contacted to the gas, a large amount of evaporated water can be supplied to the anode gas. |
