| 摘要 |
PURPOSE: To provide a solid polymer type fuel cell, wherein assembly is facilitated and performance is sharply improved, by forming a fuel electrode side collector out of a hydrophilic conductive porous body, and a humidifying water permeating body out of a water repellent porous body respectively. CONSTITUTION: Fuel and oxidant electrodes 101 and 102 are arranged on both the surfaces of a polymer electlyte membrane 100, and a fuel electrode side collector 105 having a fuel gas guide groove 106 and an oxidant electrode side collector 107 having an oxidant gas guide groove 108 are provided while contacting with the electrodes 101 and 102 to form a unit cell, and plurals of its are layered. A cooling plate 110 is inserted into the lower surface of the collector 105 via a humidifying water permeating body 109 composed of porous body at every single cell, to supply cooling water to the membrane 100 via the collector 105 and the electrode 101. At this time, the collector 105 is formed out of a hydrophilic carbon porous plate, having a porosity of about 70% and a mean hole diameter of about 40μm, and is provided with the groove 106; and the body 109 is formed out of a carbon porous thin plate, having a porosity of about 40% and a mean hole diameter of about 5μm, and water repellent treatment is applied.
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