In a casting membrane forming process (63), a dope containing a solid electrolyte is cast on a casting belt (93) from a casting die. On the casting belt, a casting membrane (61) is formed. In a casting membrane drying process (66a), the casting membrane (61) is dried. In a solvent contacting process (66b), the casting membrane (61) contacts a poor solvent of the solid electrolyte. By a self-supporting property developing process (66), a self-supporting property is given to the casting membrane (61) for a short time. The casting membrane (61) is peeled from the casting belt (93) as a precursor membrane (67). The precursor membrane (67) is immersed into water. After the precursor membrane (67) is dried, a proton substitution is performed to obtain a hydrogen-substituted membrane (75). By washing and drying of the hydrogen-substituted membrane (75), a solid electrolyte membrane (79) is obtained.

 
Web www.patentalert.com

< ELECTROLYTE MEMBRANE FOR POLYMER ELECTROLYTE FUEL CELL, PROCESS FOR ITS PRODUCTION, MEMBRANE/ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL AND METHOD OF OPERATING POLYMER ELECTROLYTE FUEL CELL

> Method for Monitoring Hydrolytic Activity

> METHOD OF FEEDING MICROBIAL ACTIVITY CONTROLLING SUBSTANCE, APPARATUS THEREFOR, AND MAKING USE OF THE SAME, METHOD OF ENVIRONMENTAL CLEANUP AND BIOREACTOR

~ 00514