| 摘要 |
PURPOSE:To achieve high efficiency by reduction of man-hour, safety and harmlessness by bonding the mixture of matrix base material and PTFE powder on a catalyst layer by electrostatic deposition, and by baking the PTFE. CONSTITUTION:The mixture powder 8 of matrix material and PTFE is placed between a positive electrode 6 and a negative electrode 7 arranged in a box 5. When high voltage is applied across the electrodes 6 and 7, the mixture powder 8 is negatively charged and vibrated up and down. An electrode substrate 1a coated with catalyst layer 2a is arranged in the upper part of the box 5 and the earth 9 is set. The line of electric force 10 is produced between the negative electrode 7 and the catalyst layer 2a. By blowing air form an air blasting hole 11, negatively charged mixture powder 8 flys along the line of electric force 10 toward the substrate 1a and the mixture powder 8 deposites on the catalyst layer 2a. A gas diffusion electrode comprising the catalyst layer 2a bonded with the mixture powder 8 and the electrode substrate 1a is heated at a temperature of melting point of PTFE to form a stacked body of the electrode substrate 1, catalyst layer 2, and matrix 3. |
