Patent · US Active

Catalyst-coated ionomer membrane with protective film layer and membrane-electrode-assembly made thereof

US8021796B2 · kind B2 · utility

1Cited by

4References

11Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Ralf Zuber · Großostheim, DE
Klaus Schaack · Obernburg, DE
Sandra Wittpahl · Obertshausen, DE
Alexander Kabza · Neu-Ulm, DE
Markus Maier · Graz, AT

Key dates

Filing date	Sep 22, 2003
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Oct 22, 2026

Classification

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

Abstract

The present invention relates to the field of electrochemical cells and fuel cells, and more specifically to polymer-electrolyte-membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). It is directed to catalyst-coated ionomer membranes (“CCMs”) and membrane-electrode-assemblies (“MEAs”) that contain one or more protective film layers for protection, sealing and better handling purposes. The one or more protective film layers are attached to the surface of said catalyst-coated membranes in such a way that they overlap with a region of the passive non-coated ionomer area, and with a region of the active area that is coated with a catalyst layer. Furthermore, the present invention discloses a process for manufacture of CCMs and MEAs that contain protective film layers. The materials may be used as components for the manufacture of low temperature fuel cell stacks.

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