| 摘要 |
PURPOSE:To ensure an electrolyte entering passage and a gas diffusion passage as previously arranged without a break by mixing hydrophilic carbon powder, water repellent carbon powder, and water repellent binder, and hot-pressing, then immediately cooling to form a reaction layer. CONSTITUTION:A mixture of hydrophilic carbon powder, water repellent carbon powder, and water repellent binder is sintered by a hot-press, then immediately cooled, or cooled with hot-pressed to form a reaction layer. Since a sintered state is kept without looseness of the powder in sitering, a break in an electrolyte entering passage or a gas diffusion passage is prevented. Thereby, the electrolyte can enter all passages and the gas can enter all diffusion passages. Therefore, a gas diffusion electrode having wide contact area of the electrolyte with the gas and high catalytic activity can be obtained. |
