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

Julien Tard

Rémi Vincent

Remi Vincent

Denis Tremblay

Joël Pauchet

The invention relates to a method for manufacturing a membrane/electrode assembly, including the steps of: providing a proton exchange membrane comprising a first electrode and a second electrode; placing a first reinforcement with an overlapping portion vertically adjacent to the periphery of the membrane, and with an extension portion made of a polymer material extending laterally beyond the membrane; placing a second reinforcement with an overlapping portion that is vertically adjacent to the periphery of the membrane, and with an extension portion of said second reinforcement extending laterally beyond the membrane and being vertically adjacent to the extension portion of the first reinforcement; applying a laser beam to the vertically adjacent extension portions such as to define an opening through the extension portions and such as to weld the extension portions.

Method for manufacturing a membrane/electrode assembly comprising reinforcements

An active layer for a proton-exchange membrane fuel cell (PEMFC) including at least two perfluorosulfonate ionomers.

Formulation of an active layer having improved performances

A membrane-electrode assembly (MEA) including a membrane and two electrodes, and further at least one layer located at the interface of the membrane and of an electrode. The layer contains a proton conductive polymer which has a glass transition temperature lower than or equal to, advantageously lower than, that of the proton conductive polymer contained in the membrane.

Membrane-electrodes assembly for proton exchange fuel cells (PEMFC), and manufacturing method

A metallic plate for a proton-exchange membrane fuel cell (PEMFC) having, on at least one of its surfaces, a coating including: conductive material fillers; a polymer used as a binder; and a metal cation absorbing compound.

Metallic bipolar plate for a proton-exchange membrane fuel cell

A fuel-cell stack includes a proton-exchange membrane, a first electrode, a second electrode, a first current-collecting metal plate, a first gas diffusion layer, and first and second layers that contact each other. The first electrode and second electrodes are fixed on corresponding sides of the membrane. The first gas diffusion layer is interposed between the first current-collecting plate and the second electrode. The first layer is fixed on the first current-collecting plate, while the second layer is fixed to the first gas diffusion layer. Both layers include a polyurethane matrix containing conductive fillers. The second layer makes contact with the first layer.

Growing community of inventors

Saint Quentin Fallavier, France

Julien Tard