The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2014
Filed:
Aug. 31, 2011
Ralf Zuber, Grossostheim, DE;
Klaus Schaack, Obernburg, DE;
Sandra Wittpahl, Obertshausen, DE;
Alexander Kabza, Neu-Ulm, DE;
Markus Maier, Ulm, DE;
Ralf Zuber, Grossostheim, DE;
Klaus Schaack, Obernburg, DE;
Sandra Wittpahl, Obertshausen, DE;
Alexander Kabza, Neu-Ulm, DE;
Markus Maier, Ulm, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
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.