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:
May. 22, 2018
Filed:
Oct. 29, 2014
GM Global Technology Operations Llc, Detroit, MI (US);
Anusorn Kongkanand, Rochester Hills, MI (US);
Ratandeep S. Kukreja, Warren, MI (US);
Joel W. Clancey, Boulder, CO (US);
Andrew Cavanaugh, Boulder, CO (US);
Steven M. George, Boulder, CO (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A coated substrate for forming fuel cell catalyst layers includes a plurality of substrate particles, an adhesion layer disposed over the substrate particles, and a precious metal layer disposed over the adhesion layer. The substrate particles may be carbon powders, carbon nanorods, carbon nanotubes and combinations thereof; with a preferred aspect ratio from 10:1 to 25:1. The adhesion layer includes a tungsten metal layer and may be formed into a heterogeneous layer comprising a lattice-interrupting layer interposed between two tungsten metal layers. The lattice-interrupting layer reduces mechanical stress to the adhesion layer with extended thickness that may develop when it experiences changing environments, and can be any layer other than the metal layer, for example, AlO, Al, or WO, where x is 1.5 to 3.0. Characteristically, the coated substrate is used in fuel cell applications such as providing the catalyst particles used in the cathode and/or anode catalyst layers.