Method for producing a polymer electrolyte membrane
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United States of America Patent
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Nov 6, 2012
Grant Date -
Mar 4, 2010
app pub date -
Dec 26, 2007
filing date -
Dec 26, 2006
priority date (Note) -
Expired
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Abstract
The invention provides a method for producing a polymer electrolyte membrane including (A) a membrane formation step of forming a membrane-form product of an ionic group-containing polymer electrolyte on a support, (B) an acid treatment step of exchanging the ionic group into an acid type by bringing the membrane into contact with an inorganic acid-containing acidic liquid, (C) an acid removal step of removing a free acid in the acid-treated membrane, and (D) a drying step of drying the acid-removed membrane, wherein the steps (B) to (D) are carried out without separating the membrane from the support.
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