Polyfuel, Inc.

University of North Florida

Shuguang Cao

Helen Xiao Xu

Kie Hyun Nam

Thomas O Jeanes

Jian Ping Chen

David Olmeijer

Jon Servaites

Ying Wang

Kiehyun Nam

Helen Xu

Kie Hyun c/o Polyfuel Inc Nam

Jingping Chen

An acid-base proton conducting polymer blend membrane is provided. The acid-base proton conducting polymer blend membrane comprises a first acidic polymer having acidic subunits, a second basic polymer having basic subunits, and a third polymer containing one or more functional units for improving membrane conductivity, flexibility, water remaining ability, dimension stability, and methanol crossover. In one embodiment, the acid-base polymer blend membrane of the present invention comprises a first acidic polymer having acidic subunits, a second basic polymer having basic subunits, wherein at least one of the first acidic and second basic polymer comprises one or more functional units to improve the properties of the membrane. The functional units include hydrophilic units, methanol blocking units, methanol blocking units, dimensional stabilizer units, and flexible units.

Acid-base proton conducting polymer blend membrane

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

The invention provides ion-conductive copolymers that can be used to fabricate proton exchange membranes (PEM's), catalyst coated proton exchange membranes (CCM's) and membrane electrode assemblies (MEA's) which are useful in fuel cells and their application in electronic devices, power sources and vehicles. The ion-conductive copolymers comprise one or more ion-conductive oligomers randomly positioned in a polymeric backbone that is not ion-conductive.

Ion-conductive copolymers containing one or more ion-conducting 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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Mountain View, CA, United States of America

Shuguang Cao