Epoxy-crosslinked sulfonated poly (phenylene) copolymer proton exchange membranes

United States Patent

7,816,482
October 19, 2010
View the Complete Patent at the US Patent & Trademark Office
Polymer Membrane Separators for the Next-Generation of Energy-Water Systems
An epoxy-crosslinked sulfonated poly(phenylene) copolymer composition used as proton exchange membranes, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cell, in electrode casting solutions and electrodes, and in sulfur dioxide electrolyzers. These improved membranes are tougher, have higher temperature capability, and lower SO.sub.2 crossover rates.
Hibbs; Michael (Albuquerque, NM), Fujimoto; Cy H. (Albuquerque, NM), Norman; Kirsten (Albuquerque, NM), Hickner; Michael A. (State College, PA)
Sandia Corporation (Albuquerque, NM)
12/411,451
March 26, 2009
528/98 ; 528/373; 528/86; 528/87;
C08G 59/00 (20060101); C08G 61/02 (20060101); C08G 75/00 (20060101);
528/98
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.