Patent · US Expired

Method for producing a membrane made of bridged polymer and a fuel cell

US7229553B2 · kind B2 · utility

8Cited by

7References

22Claims

0Family size

Assignee

Pemeas GmbH · DE

Inventors

Oemer Uensal · Mainz, DE
Joachim Kiefer · Losheim am See, DE

Key dates

Filing date	Mar 1, 2002
Grant date	Jun 12, 2007
Priority date	—
Expiry date	Mar 13, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Method for producing a membrane made of bridged polymer and a fuel cell. The present invention relates to a membrane comprising a bridged polymer which is produced by a selected process. The membrane of the invention displays a significantly improved fracture toughness (elongation at break/tensile strength) with virtually unchanged swelling behavior. The membranes of the invention are suitable for producing membrane-electrode units for fuel cells.

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