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:
Jun. 14, 2016
Filed:
Oct. 16, 2009
Daniel T. Folmsbee, Victor, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Joe C. Machuca, Rochester, NY (US);
Bernd Krause, Liederbach, DE;
David R. Savage, Rochester, NY (US);
David A. Arthur, Honeoye Falls, NY (US);
Derek R. Lebzelter, Rochester, NY (US);
Daniel T. Folmsbee, Victor, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Joe C. Machuca, Rochester, NY (US);
Bernd Krause, Liederbach, DE;
David R. Savage, Rochester, NY (US);
David A. Arthur, Honeoye Falls, NY (US);
Derek R. Lebzelter, Rochester, NY (US);
GL Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for reconditioning a fuel cell stack. The method includes periodically increasing the relative humidity level of the cathode input airflow to the stack to saturate the cell membrane electrode assemblies to be greater than the relative humidity levels during normal stack operating conditions. The method also includes providing hydrogen to the anode side of the fuel cell stack at system shut down while the membrane electrode assemblies are saturated without stack loads being applied so that the hydrogen crosses the cell membranes to the cathode side and reacts with oxygen to reduce stack contaminants.