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

Ludovic Rouillon

Jean-Philippe Poirot-Crouvezier

Sébastien Martinet

Remi Vincent

Marianne Chami

Rémi Vincent

Mathias Gerard

Laurent Garnier

Joël Pauchet

Jean-Noel Carminati

Ramon Naiff Da Fonseca

A process for manufacturing a gas diffusion device includes providing a superposition of a composite layer and of an electrically conductive element, the composite layer including electrically conductive fibers and a polymerizable resin impregnating the conductive fibers, and the electrically conductive element having an open porosity between a first face and a second face. The process also includes compressing the superposition of the composite layer and of the conductive element so as to bring said conductive fibers into contact with the first face of the element, so as to make said resin flow into said element without the resin impregnating all the volume of said conductive element; and polymerizing the resin.

Method for producing a gas diffusion device having improved electrical properties

A gas-diffusing device, including a superposition of a layer of composite material including electrically conductive fibres and a polymerized resin coating said conductive fibres; a first electrically conductive layer having an open porosity between first and second faces and including a first void in the second face, the first face making electrical contact with the conductive fibres of the layer of composite material, the polymerized resin coating one portion of the first conductive layer on the first face.

Gas-diffusing device for decreasing head losses

A method for welding between two metallic plates, including:

Method using a laser for welding between two metallic materials or for sintering of powder(s), application for making bipolar plates for PEM fuel cells

The invention relates to a method for determining the dimensions of an electrochemical cell allowing a total area of the electrochemical cell to be minimized while maximizing an electrical signal generated by the electrochemical cell in operation, including: a/ determining a first cost function expressing the variation in a first parameter representative of the total area as a function of an adjustment variable representative of an aspect ratio of the active zone; b/ determining a second cost function expressing the variation in a second parameter representative of the generated electrical signal as a function of the adjustment variable; c/ determining a compound cost function from the first and second cost functions and identifying a value of the adjustment variable that optimizes the compound cost function and that therefore conjointly optimizes the first and second cost functions.

Method for determining the dimensions of an electrochemical cell comprising PCB holding plates

Growing community of inventors

Grenoble, France

Ludovic Rouillon