Centre National De La Recherche Scientifique

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Electricite De France

Sorbonne Université

College De France

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

Université Pierre Et Marie Curie

Université De Caen Normandie

Université Polytechnique Hauts-de-france

Ecole Nationale Superieure D Ingenieurs De Caen

David Portehault

Philippe Stevens

Clément Sanchez

Valérie Buissette

Gwenaelle Toussaint

Thierry Le Mercier

Karine Valle

Sophie Cassaignon

Sylvain Marinel

Etienne Savary

Corinne Chaneac

Clement Aime Comminges

Aurelien Louis Habrioux

Christel Gervais Stary

Boniface Kokoh

Guillaume Gouget

Ismail Abidat

Teko Wilhelmin Napporn

Julie Besnardiere

Emmanuelle Cazayus-Claverie

Olivier Durupthy

Natacha Duee

Gilles Wallez

Chrystel Ambard

A method for producing a graphene oxide-based compound for an air electrode of a metal-air battery. A nitrogen and sulfur-based organic compound is added to an aqueous suspension of a graphene oxide. The water of the suspension is evaporated in order to obtain a powder. This powder is heated under an inert atmosphere in order to sublime the organic compound and stimulate the incorporation of nitrogen from the organic compound into the graphitic sites of the graphene oxide. The nitrogen and sulfur-doped graphene oxide is added to a second aqueous suspension comprising a cobalt nitrate-based compound. This second suspension is heated in order to form nanoparticles of cobalt oxide at the surface of at least one nitrogen and sulfur-doped graphene oxide sheet.

Method for producing a graphene oxide-based compound for an air electrode of a metal-air battery and associated compound

A nanostructured material consisting essentially of boron. The material is in amorphous form and comprising aggregates of boron nanoparticles. A method of preparation thereof and the uses thereof.

Nanostructured amorphous boron material

The compound according to the invention is a compound of formula (1) AWMOO, wherein A is chosen from the group comprising the Li, Na, NH, K and H cations, and it is characterized in that x and y verify the relationships 0&#x2264;x&#x2264;1 and 0&#x2264;y&#x2264;0.5, and in that it has a crystalline structure of the hexagonal type with a base of WOoctahedra, said structure having tunnels delimited by 6, 4 and 3 of said octahedra and oriented along the axis c.

Tungsten oxide-type compound having a new crystalline structure and method for preparing same

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Le Kremlin-Bicetre, France

David Portehault