Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Sylvie Escribano

Jean-Philippe Poirot-Crouvezier

Remi Vincent

Rémi Vincent

Alejandro Franco

Laure Guetaz

Olivier Lemaire

Pascal Schott

Marion Chandesris

Guillaume Krosnicki

Marion Scohy

A unit cell of a fuel cell may include: a membrane-electrode assembly including a proton exchange membrane, an anode electrode fastened to a first face of the proton exchange membrane, a first flow guide plate positioned facing the anode electrode and including at least one flow channel having a fuel inlet zone, a median flow zone and a fuel outlet zone. The anode electrode may have, at the fuel outlet zone, a tolerance to carbon monoxide pollution greater than its average tolerance to carbon monoxide pollution at the median flow zone and at the fuel inlet zone.

Fuel cell limiting co poisoning and poisoning diagnostic process

A fuel cell includes a proton-exchange membrane, and a cathode and anode fixed on its opposite sides. The anode delimits a flow conduit between a molecular-oxygen inlet area and a water outlet area. The cathode includes a support for catalyst material. The support has first and second materials to which catalyst is fixed, the first material being a graphitized material. The second material has a resistance to corrosion by oxygen that is greater than that of the first material. A quantity of the second material at the inlet area is greater than a quantity of the second material at the water outlet. The cathode comprises a first layer including the first material and a second layer including the second material. A thickness of the second layer decreases between the molecular-oxygen inlet area and the water outlet area.

Fuel cell comprising a proton-exchange membrane, having an increased service life

An electrode for an electrochemical system, such as a fuel cell, is formed by an active layer including: pores; at least one catalyst; at least one ionomer; and electrically-conductive particles. The catalyst content per pore ranges between 30 and 500 mg/cmwith respect to the pore volume.

Proton-exchange membrane fuel cell electrode structuration

The invention relates to a method for extending the lifetime of a PEMFC fuel cell that includes the step of supplying, at anode, a chemical compound capable of reacting with oxygen, but not originating from the fuel.

Method and device for limiting the ageing of fuel cells with proton exchange membrane

Growing community of inventors

Grenoble, France

Sylvie Escribano