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:
Sep. 12, 2017
Filed:
Jan. 20, 2012
Lesia V. Protsailo, Bolton, CT (US);
Laura Roen Stolar, South Windsor, CT (US);
Jesse M. Marzullo, Enfield, CT (US);
Mallika Gummalla, Longmeadow, MA (US);
Sergei F. Burlatsky, West Hartford, CT (US);
Lesia V. Protsailo, Bolton, CT (US);
Laura Roen Stolar, South Windsor, CT (US);
Jesse M. Marzullo, Enfield, CT (US);
Mallika Gummalla, Longmeadow, MA (US);
Sergei F. Burlatsky, West Hartford, CT (US);
Audi AG, Ingolstadt, DE;
Abstract
An example of a stable electrode structure is to use a gradient electrode that employs large platinum particle catalyst in the close proximity to the membrane supported on conventional carbon and small platinum particles in the section of the electrode closer to a GDL supported on a stabilized carbon. Some electrode parameters that contribute to electrode performance stability and reduced change in ECA are platinum-to-carbon ratio, size of platinum particles in various parts of the electrode, use of other stable catalysts instead of large particle size platinum (alloy, etc), depth of each gradient sublayer. Another example of a stable electrode structure is to use a mixture of platinum particle sizes on a carbon support, such as using platinum particles that may be 6 nanometers and 3 nanometers. A conductive support is typically one or more of the carbon blacks.