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

Patent Number:	8,110,636
Issued:	February 7, 2012
Official Filing:	View the Complete Patent at the US Patent & Trademark Office
Technology:	Next-Generation Automotive
Abstract:	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.
Application Number:	12/425,413
Filed:	April 17, 2009
Current U.S. Class:	525/471 ; 525/534; 525/535; 528/125; 528/128; 528/220; 528/482; 528/487;
Current International Class:	C08F 8/36 (20060101); C08G 61/10 (20060101); C08G 61/12 (20060101);
Field of Search:	525/471,534,535 528/125,128,220,482,487
Government Interests:	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.