| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for joining a gas diffusion electrode constituting material and a metallic material for obtaining a gas diffusion electrode stable in electrode performance over a long period and having a long service life. SOLUTION: At the time of joining a gas diffusion electrode constituting material and a silver material, silver fine particles 8 are deposited on the joint surface of the gas diffusion electrode constituting material and/or the silver material, and, after that, hot pressing is executed. The joint surface of the gas diffusion electrode constituting material and/or the silver material is provided with ruggedness, and anchoring effect is used, by which the joining strength can be increased. The joint metal face of the gas diffusion electrode constituting material and/or the silver sheet to be joined is roughened and is coated with silver fine particles 8, next, the silver sheet and the gas diffusion electrode constituting material are superposed, and hot pressing is executed in the temp. range of 200 to 400 deg.C under the pressure of >=5 kg/cm2.
|
