SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

摘要

A dope (24) containing a solvent and a precursor of a solid electrolyte is cast onto a belt (94) to form a casting membrane (61). The casting membrane (61) is immersed in a contact liquid (100) in a liquid bath (83) and peeled as a wet precursor membrane (67) from the belt (94) when having a self-supporting property. The solvent contained in the wet precursor membrane (67) is substituted by the contact liquid (100), and the wet precursor membrane (67) is transported out of the liquid bath (83). After being dried in a tenter device (85), the wet precursor membrane (67) is contacted with a proton solution (110) in a proton substitution chamber (86) to perform proton substitution to the precursor contained in the wet precursor membrane (67), and then dried in a drying chamber (87) to be a solid electrolyte membrane (77).