Centre National De La Recherche Scientifique

L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Electricite De France

Institut Polytechnique De Grenoble

Marian Julien Chatenet

Philippe Stevens

Gwenaelle Toussaint

Audrey Montaut

Laetitia Dubau

Florian Moureaux

Sandrine Moutin

Julien Frederic Christophe Durst

Frederic Thibaut Maillard

Frédéric Thibaut Maillard

Julien Frédéric Christophe Durst

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.

Hollow platinum nanoparticles for fuel cells

The present invention relates to an electrochemical device, in particular a lithium-air battery with an aqueous electrolyte, comprising: a negative electrode compartment containing lithium metal; a positive electrode compartment comprising at least one positive air electrode making contact with an aqueous solution containing lithium hydroxide; and a solid electrode separating, in a gas and fluidtight manner, the negative electrode compartment from the positive electrode compartment, characterized in that the aqueous solution containing the lithium hydroxide furthermore contains at least one additive decreasing the solubility of the lithium ions. The invention also relates to a method for storing and releasing electrical energy using a lithium-air battery according to the invention.

Aqueous electrolyte for lithium-air battery

Growing community of inventors

Meylan, France

Marian Julien Chatenet