Polyfuel, Inc.

Kie Hyun Nam

Shuguang Cao

Thomas O Jeanes

Jian Ping Chen

Helen Xiao Xu

David Olmeijer

In one aspect, the invention provides ion conductive copolymers comprising (1) a plurality of first oligomers, (2) a plurality of second oligomers, (3) ion conductive monomers and (4) linking monomers. The oligomers preferably are hydrophobic and together with the ion conductive monomers are randomly dispersed between the linking monomers. Uses of such polymeric materials include the formation of polymer electrolyte membranes (PEMs), catalyst coated membranes (CCM's) and membrane electrolyte assemblies (MEA's) which may be used in fuel cells and the like.

Ion conductive copolymers containing one or more hydrophobic oligomers

This invention relates to ion conducting random copolymers that are useful in forming polymer electrolyte membranes used in fuel cells.

Ion conductive random copolymers

This invention relates to sulfonated copolymers which are useful in forming polymer electrolyte membranes used in fuel cells.

Sulfonated copolymer

This invention relates to ion conductive copolymers which are useful in forming polymer electrolyte membranes used in fuel cells.

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Palo Alto, CA, United States of America

Kie Hyun Nam