Method of making durable polymer electrolyte membranes
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United States of America Patent
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Feb 7, 2012
Grant Date -
Jul 3, 2008
app pub date -
Dec 21, 2007
filing date -
Dec 29, 2006
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Abstract
A method of making a durable fuel cell polymer electrolyte membrane is provided comprising the steps of: a) providing a polymer electrolyte membrane; b) providing a solution of a salt selected from the group consisting of manganese salts and cerium salts or a suspension of particles of a compound selected from the group consisting of manganese oxides and cerium oxides; and c) applying the solution or suspension to the polymer electrolyte membrane by a method selected from the group consisting of brushing, spraying and use of a slot die. Some embodiments comprise metered application of the solution to the polymer electrolyte membrane.
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