| 摘要 |
The present invention provides a fuel cell having a simple structure which is suitable for miniaturization, and which makes it possible to reduce ion conductive resistance of a solid polymer oxide itself and ion conductive resistance and contact resistance between the solid polymer oxide and electrode plates, and a fastening method therefor. A first separator 16 composed of a dense material is fitted to a hole 24 provided in a second separator 18 composed of a dense material. A chamber 25 is defined between the first separator 16 and the second separator 18. A filler 83 is disposed in the chamber 25. The first separator 16 is pressed toward the solid polymer oxide 60 by the aid of the pressure of water introduced into the chamber 25, and it swells by itself by the aid of water. On the other hand, the filler 83 in the chamber 25 also swells. The swelling action further increases the pressing force on fuel cell units, and it enhances the stacking fastening force on the fuel cell units. When the solid polymer oxide 60 is wetted, the internal resistance is reduced. The ion conductive resistance between the solid polymer oxide 60 and the first separator 16, and the contact resistance concerning electronic conductivity are also reduced. <IMAGE> |
