Commissariat a L'energie Atomique Et Aux Energies Alternatives

Delphine Dru

Pierrick Buvat

Janick Bigarré

Cédric Loubat

Janick Bigarre

Christophe Coutanceau

Julien Cellier

Quentin Crouzet

Stève Baranton

Proton-conducting, fluorinated polymer grafted particles for use in the preparation of catalytic layers for fuel cells, such as H/air cells or H/Ocells. The grafted particles include a particle made of a material for catalyzing oxygen reduction or hydrogen oxidation, such as a platinum particle, that has been grafted with a proton-conducting, fluorinated polymer graft. The proton-conducting, fluorinated polymer graft includes an organic spacer group, a single bond or an organic spacer group, a repeating unit resulting from polymerization of a fluorinated styrenic monomer, and a repeating unit resulting, from polymerization of a non-fluorinated styrenic monomer bearing at least one proton-conducting group.

Particles suitable for catalyzing oxygen reduction or hydrogen oxidation and being proton-conducting by grafting specific proton-conducting fluorinated polymers to the surface thereof

Silica particles bonded to polymer chains consisting of at least one polymer comprising at least one fluorinated styrene repeating unit comprising at least one proton-conducting group, optionally in the form of a salt, the bonding between the particles and each of the chains being carried out by an organic spacer group.

Fluorinated proton-conducting inorganic particles and use of said particles in proton-conducting membranes

A method for preparing particles comprising a material suitable for catalysing oxygen reduction or hydrogen oxidation, the particles being grafted by grafts consisting of at least one specific polymer comprising at least one repeating styrene unit bearing at least one proton-conducting group.

Method for preparing proton-conducting particles suitable for catalysing oxygen reduction or hydrogen oxidation by grafting specific proton-conducting polymers to the surface of same

A specific method for preparing platinum particles grafted with proton-conducting polymers and use of these particles as catalysts for oxygen reduction.

Method for producing proton-conducting platinum particles with a large active surface area and surface-grafted with specific, proton-conducting polymers

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Sorigny, France

Delphine Dru