SOLID ELECTROLYTE MEMBRANE, METHOD AND APPARATUS FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL
First Claim
1. A method for producing a solid electrolyte membrane comprising the steps of:
- forming a casting membrane by casting a dope containing a solid electrolyte and a solvent onto a support;
peeling said casting membrane from said support as a wet membrane;
contacting at least one of said casting membrane and said wet membrane with a contact liquid; and
drying said wet membrane to evaporate said contact liquid from said wet membrane.
1 Assignment
0 Petitions
Accused Products
Abstract
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).
57 Citations
39 Claims
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1. A method for producing a solid electrolyte membrane comprising the steps of:
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forming a casting membrane by casting a dope containing a solid electrolyte and a solvent onto a support; peeling said casting membrane from said support as a wet membrane; contacting at least one of said casting membrane and said wet membrane with a contact liquid; and drying said wet membrane to evaporate said contact liquid from said wet membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 37, 38, 39)
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33. An apparatus for producing a solid electrolyte membrane comprising:
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a casting device for casting a dope containing a solid electrolyte and a solvent onto a support to form a casting membrane; a peeling device for peeling said casting membrane from said support as a wet membrane; a contact liquid contacting device for contacting at least one of said casting membrane and said wet membrane with a contact liquid, said contact liquid containing a liquid soluble to said solvent or a liquid which is a poor solvent of said solid electrolyte; and a drying device for drying said wet membrane. - View Dependent Claims (34, 35, 36)
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Specification