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Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes

United States Patent

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8,110,636
February 7, 2012
View the Complete Patent at the US Patent & Trademark Office
Next-Generation Automotive
Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.
12/ 425,413
April 17, 2009
525/471 525/534525/535528/125528/128528/220528/482528/487
C08F 8/36 (20060101)C08G 61/10 (20060101)C08G 61/12 (20060101)
525/471,534,535528/125,128,220,482,487
FEDERALLY SPONSORED RESEARCH The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.