| 摘要 |
PURPOSE:To obtain a junction body of a solid polymer electrolyte film and gas diffusing electrodes having a large catalyst carrying quantity per unit area by hot-pressing a pinch body arranged with gas diffusing films on both sides of the solid polymer electrolyte film deposited with catalysts on both faces. CONSTITUTION:A perfluorosulfonic acid polymer film is used for a solid polymer electrolyte film 1, and a catalyst layer 2 made of Pt fine grains is formed on it by the adsorption reduction method. Gas diffusing electrodes 3A, 3B are constituted of hydrophilic reaction films 4A, 4B and hydrophobic gas diffusing films 5A, 5B. The solid polymer electrolyte film 1 is sandwiched between two gas diffusing electrodes 3A, 3B to form a pinch body, which is hot-pressed under the coexistence of moisture to obtain a junction body. The junction body thus manufactured carries a catalyst 4-5mg/cm<2>, and the performance can be sharply improved. |
