Polymer electrolytes including heteropolyacids

US8206874B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Steven J. Hamrock · Saint Paul, US
• Matthew H. Frey · Maplewood, US
• Michael A. Yandrasits · Hastings, US
• Gregory M. Haugen · Edina, US
• Andrew M. Herring · Boulder, US
• James L. Horan · Sharon Hill, US
• Niccolo V. Aieta · Denver, US

Key dates

• Filing date: Nov 7, 2008
• Grant date: Jun 26, 2012
• Expiry date: Mar 17, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

This disclosure provides polymer electrolytes, polymer electrolyte membranes (PEM's) and membrane electrode assemblies (MEA's) such as may be useful in fuel cells which contain or comprise polyoxometalates (POM's) or heteropolyacids (HPA's). In some embodiments the polyoxometalate, it's counterions or both may comprise Mn and/or Ce. In some embodiments the polymer electrolyte is fluorinated. In some embodiments the polymer electrolyte comprises a second acidic functional group other than a polyoxometalate. In another aspect, the present disclosure provides methods of making polymer electrolytes including methods which comprising a step of copolymerizing monomers comprising a covalently bound polyoxometalates and methods which comprise a step of covalently attaching a polyoxometalate to the polymer.