Fluorinated ionomers and their uses

US6140436A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Christopher Marc Doyle · Hockessin, US
• William B. Farnham · Hockessin, US
• Andrew Edward Feiring · Wilmington, US
• Peter A. Morken · Wilmington, US
• Mark Gerrit Roelofs · Earleville, US

Key dates

• Filing date: Nov 9, 1999
• Grant date: Oct 31, 2000
• Expiry date: Nov 9, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

This invention concerns ionomers comprising a substantially fluorinated, but not perfluorinated, polyethylene backbone having pendant groups of fluoroalkoxy sulfonic acids and the metal salts thereof, and with the uses of said ionomers in electrochemical applications such as batteries, fuel cells, electrolysis cells, ion exchange membranes, sensors, electrochemical capacitors, and modified electrodes.