US 12,230,807 B2
Fuel cell limiting co poisoning and poisoning diagnostic process
Sylvie Escribano, Grenoble (FR); Marion Chandesris, Grenoble (FR); Laure Guetaz, Grenoble (FR); Pascal Schott, Grenoble (FR); and Marion Scohy, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Jan. 23, 2023, as Appl. No. 18/100,264.
Application 18/100,264 is a continuation of application No. 17/058,875, abandoned, previously published as PCT/EP2018/064231, filed on May 30, 2018.
Prior Publication US 2023/0238542 A1, Jul. 27, 2023
Int. Cl. H01M 4/86 (2006.01); H01M 4/92 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 4/8605 (2013.01) [H01M 4/8642 (2013.01); H01M 4/921 (2013.01); H01M 4/926 (2013.01); H01M 8/1004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cell configured for a fuel cell, comprising:
a membrane-electrode assembly, comprising a proton exchange membrane, an anode electrode fixed to a first face of the proton exchange membrane, and a first flow guide plate arranged opposite the anode electrode, the first flow guide comprising a first flow channel having a fuel inlet zone, a first middle flow zone, and a fuel outlet zone; wherein
at the fuel outlet zone, the anode electrode has a carbon monoxide pollution tolerance greater than its average carbon monoxide pollution tolerance at the middle flow zone and at the fuel inlet zone,
the membrane-electrode assembly further comprises a cathode electrode fixed to a second face of the proton exchange membrane,
the cell further comprises a second flow guide plate arranged opposite the cathode electrode comprising a second flow channel,
the second flow channel comprises an oxidizer inlet zone, a second middle flow zone, and an oxidizer outlet zone,
the cathode electrode comprises a PtX alloy catalyst, X being a metal and a proportion of the metal X in the catalyst in the oxidizer outlet zone is lower than an average proportion of the metal X in the catalyst outside the oxidizer outlet zone, and
the metal X is cobalt.