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:
Jul. 12, 2022
Filed:
Jan. 17, 2019
Nuvera Fuel Cells, Llc, Billerica, MA (US);
Filippo Gambini, Boston, MA (US);
Scott Blanchet, Chelmsford, MA (US);
Olga Polevaya, Needham, MA (US);
Edward Domit, Westford, MA (US);
Andrew Baugher, Brighton, MA (US);
Patrick Burand, Winthrop, MA (US);
Nuvera Fuel Cells, LLC, Billerica, MA (US);
Abstract
An electrochemical cell stack is provided. The electrochemical cell stack has a plurality of electrochemical cells. Each electrochemical cell has a membrane electrode assembly which includes a cathode catalyst layer, an anode catalyst layer, and a polymer membrane interposed between the catalyst layer and the anode layer. Each electrochemical cell also has an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, and a cathode flow field positioned between the cathode plate and the cathode catalyst layer. The cathode flow field includes a porous structure having a plurality of pores having an average pore size. The plurality of electrochemical cells has a first electrochemical cell positioned at a first end of the electrochemical cell stack. The porous structure of the first electrochemical cell has an average pore size greater than the average pore size of the porous structures of the plurality of electrochemical cells. And, the porous structure of the first electrochemical cell has a flow resistance less than an average flow resistance of the porous structures of the plurality of electrochemical cells.