Reinforcing film for the electrolyte membrane of a polymer electrolyte fuel cell
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United States of America Patent
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Jun 2, 2015
Grant Date -
Apr 29, 2010
app pub date -
Mar 18, 2008
filing date -
Mar 20, 2007
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Abstract
A biaxially oriented film for reinforcing the electrolyte membrane of a polymer electrolyte fuel cell, wherein the film includes (i) a layer mainly composed of polyethylene naphthalene dicarboxylate and has (ii) a Young's modulus in at least one direction of not less than 9,000 MPa and (iii) a thickness of 15 to 150 μm. The biaxially oriented film has a satisfactory reinforcing effect as a reinforcing member for a polymer electrolyte membrane at the operation temperature of a polymer electrolyte fuel cell though it is a thin film.
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