Commissariat a L'energie Atomique

Prayon

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Universite De Picardie Jules Vernes

Renault S.a.s.

Université De Picardie Jules Verne

Sébastien Launois

Sébastien Martinet

Alain M Gourgue

Sébastien Patoux

Alain Germeau

Isabelle Willems

Christian Masquelier

Carole Bourbon

Frederic Le Cras

Frédéric Le Cras

Cédric Haon

Laurence Croguennec

Nikita Hall

Sylvain Boulineau

Loïc Simonin

Marlène Rey

Philippe Desbois

Alain Gourgue

A method for preparing a NaV(PO)Fmaterial, including at least the steps: a) reducing the vanadium oxide, VO, under a reducing atmosphere in the absence of elementary carbon and in the presence of at least one phosphate anion precursor in order to form vanadium phosphate, VPO; and b) exposing, under an inert atmosphere, a mixture of the VPOmaterial obtained in step a) with an effective amount of sodium fluoride, NaF, and at least one hydrocarbon- and oxygen-containing compound which is a source of elementary carbon, to temperature conditions that are favourable for calcining said mixture so as to form said NaV(PO)Fcompound. Also, a related electrode material, an electrode and a secondary sodium battery using the presented material.

Method for preparing a NA3V2(PO4)2F3 particulate material

The invention relates to lithium-bearing iron phosphate in the form of micrometric mixed aggregates of nanometric particles, to an electrode and cell resulting therefrom and to the method for manufacturing same, which is characterized by a nanomilling step.

Lithium batteries containing lithium-bearing iron phosphate and carbon

The invention relates to a lithium battery, comprising at least one lithium intercalation compound, made up of crystallites and obtained by a production method, comprising at least the following steps: formation of a homogeneous mixture of at least one precursor for the lithium intercalation compound with a given adjunct, chemically stable with relation to crystallites and designed to limit the growth of crystallites or crystallite precursors during the formation thereof, thermal treatment of the homogeneous mixture for the synthesis of the lithium intercalation compound in the form of crystallites and to give a composite material comprising at least two phases formed respectively by the lithium intercalation compound and the adjunct and forming of the composite material to give said electrode. The invention further relates to an electrode obtained by said method and lithium battery comprising such an electrode.

Electrode for a lithium battery, method for production of such an electrode and lithium battery comprising said electrode

Growing community of inventors

Grenoble, France

Sébastien Launois