Patent · US Active

Membrane-electrode assembly, polymer membranes for a membrane-electrode assembly, polymer electrolyte fuel cells, and methods for the production thereof

US7682722B2 · kind B2 · utility

6Cited by

9References

19Claims

0Family size

Assignee

Elcomax Membranes GmbH · DE

Inventors

Dieter Melzner · Göttingen, DE
Annette Reiche · Oettingen, DE
Ulrich Maehr · Berlin, DE
Suzana Kiel · Göttingen, DE

Key dates

Filing date	Jul 19, 2005
Grant date	Mar 23, 2010
Priority date	—
Expiry date	Dec 20, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T156/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A membrane-electrode assembly and polymer electrolyte fuel cells and methods of production thereof, in which a polymer membrane, containing at least one basic polymer membrane, is sandwiched between two flat gas diffusion electrodes each of which is loaded with a dopant, whereby after reaching a mass transport equilibrium for the exchange of the dopant between the gas diffusion electrodes and the polymer membrane, the polymer membrane has a conductivity of at least 0.1 S/m at a temperature of no less than 25° C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.