NANOPARTICLES BASED ON PLATINUM AND A RARE EARTH OXIDE, AND THE METHODS FOR THE PRODUCTION THEREOF

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The present invention relates to nanoparticles comprising at least one platinum compound comprising at least platinum and at least one rare earth, said rare earth being present in an oxidized form, notably useful for the catalysis of the reduction reaction of dioxygen (RRO) in an acid medium, and methods for the preparation thereof. The invention also relates to a cathode comprising said nanoparticles and its use notably in a hydrogen fuel cell, also called PEMFC.