Hollow platinum nanoparticles for fuel cells
AssigneesL`Air Liquide, Societe Anonyme Pour L`Etude et L`Exploitation des Procedes Georges Claude, Institut Polytechnique De Grenoble, Centre National De La Recherche Scientifique
InventorsAudrey MONTAUT, Sandrine MOUTIN, Marian Julien CHATENET, Julien Frederic Christophe DURST, Frederic Thibaut MAILLARD, Laetitia Dubau
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Abstract
The present invention relates to hollow platinum nanoparticles with a diameter comprised between 3 and 20 nm which comprise a first central cavity and optionally at least one second cavity at the periphery of the first cavity, the shell of which is dense and single-crystal with a thickness comprised between 0.2 and 5 nm. The invention also relates to a method for manufacturing such nanoparticles, as well as to their use as an electrocatalyst in fuel cells.
Claims15
A hollow platinum nanoparticle, characterized in that:
- said nanoparticle has a diameter comprised between 3 nm and 20 nm;
- said nanoparticle comprises a first central cavity and optionally at least one second cavity at the periphery of said first central cavity;
- said nanoparticle comprises a dense and single-crystal shell, the thickness of which is comprised between 0.2 nm and 5 nm;
- said nanoparticle does not include any alloy elements of the non-noble metal type;
- said nanoparticle is quasi-spherical.
Dependencies are inferred from the claim text.