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

DWPI Title: Synthesis of epoxy-crosslinked sulfonated poly(phenylene) copolymer composition used as proton exchange membranes, comprises crosslinking copolymer comprising sulfonated poly(phenylene) and tetrahydroxy bis(cyclopentadienone)
Abstract: 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 SO2 crossover rates.
Use: Method of synthesizing epoxy-crosslinked sulfonated poly(phenylene) copolymer composition (claimed) used as proton exchange membranes in hydrogen fuel cells, direct methanol fuel cell, in electrode casting solutions and electrodes, and in sulfur dioxide electrolyzers.
Advantage: The composition provides improved membranes which are tougher, have higher temperature capability, and lower silicon dioxide (SO 2 ) crossover rates.
Novelty: An epoxy-crosslinked sulfonated poly(phenylene) copolymer composition is synthesized by crosslinking copolymer comprising sulfonated poly(phenylene) and tetrahydroxy bis(cyclopentadienone) with tetra-epoxy crosslinking agent, and curing mixture at 150-200° C for 1-6 hours.
Filed: 3/26/2009
Application Number: US2009411451A
Tech ID: SD 11210.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
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