A method is provided for making a crosslinked polymer electrolyte, typically in the form of a membrane for use as a polymer electrolyte membrane in an electrolytic cell such as a fuel cell, as well as the polymer so made, the method comprising application of ultraviolet radiation to a highly fluorinated fluoropolymer comprising: a backbone derived in part from tetrafluoro-ethylene monomer, first pendent groups which include a group according to the formula --SO.sub.2X, where X is F, Cl, Br, OH or --O.sup.-M.sup.+, where M.sup.+ is a monovalent cation, and second pendent groups which include Br, Cl or I. Typically, the membrane has a thickness of 90 microns or less, more typically 60 or less, and most typically 30 microns or less.

 
Web www.patentalert.com

< Fuel cell electrocatalyst of Pt-Rh-Mo-Ni/Fe

< Membrane for a fuel cell and method for producing the same

> Method and apparatus for manufacturing a fuel cell electrode

> Nested bipolar plate for fuel cell and method

~ 00269