| 摘要 |
<p>PURPOSE:To contact a solid polyelectrolyte with a catalyst at sufficiently high probabilities to increase reaction areas within electrodes by forming the electrodes by use of a paste of a solid polyelectrolyte film obtained by addition of predetermined carbon particles that support the catalyst to a predetermined colloidal dispersion. CONSTITUTION:An alcohol solution 12 containing a solid polyelectrolyte 11 is mixed and stirred with an organic solvent 21 to form a colloidal dispersion of electrolyte 11. In the dispersion, fine carbon particles 53 are formed by bonding the electrolyte 11 to the surface of each of catalyst-supporting fine carbon particles 31 that support a catalyst with fluororesin added thereto without covering the catalyst in excess. When the particles 31 are collided against one another by ultrasonic dispersion, the adsorbent electrolyte 11 is bonded to the other particles 53, causing bridged agglomeration and forming a paste. The paste is applied to a gas diffusion layer 57 to form an electrolyte 50, and then the solid polyelectrolyte contacts the catalyst at sufficiently high probabilities and so reaction areas inside the electrodes increase, providing a solid polyelectrolyte fuel cell that exhibits high performance.</p> |
