Patent ID: 9735442
Date: 2017-08-15
CPC Classifications: B82Y,H01M,Y02E,Y10S

Claim:
1. A manufacture comprising a fuel cell, said fuel cell comprising a proton-exchange membrane, a cathode fixed on a first side of said proton-exchange membrane, and an anode fixed on a second side of said proton-exchange membrane, wherein said anode delimits a flow conduit between a molecular-oxygen inlet area and a water outlet area, wherein said cathode consists of a first catalyst layer and a second catalyst layer, wherein said first catalyst layer includes a first material, wherein said second catalyst layer includes a second material, wherein said first material comprises a graphitized material, wherein said second material has a resistance to corrosion by oxygen that is greater than a resistance to corrosion by oxygen of said first material, wherein a thickness of said first catalyst layer decreases from said water outlet area to said molecular-oxygen inlet area, wherein a thickness of said first catalyst layer at said water outlet area is less than a thickness of said first catalyst layer at said molecular-oxygen inlet area, wherein a thickness of said second catalyst layer decreases from said molecular-oxygen inlet area to said water outlet area, and wherein a thickness of said first catalyst layer at said molecular-oxygen inlet area is greater than a thickness of said second catalyst layer at said water outlet area.