Centre National De La Recherche Scientifique

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

Umicore

Saft

Universite De Picardie Jules Vernes

Université De Picardie Jules Verne

Saft Groupe Sa

Laurence Croguennec

Christian Masquelier

Philippe Biensan

Claude Delmas

Stephane Levasseur

Sébastien Launois

Stéphane Levasseur

Julien Breger

Frederic Castaing

Nikita Hall

Loïc Simonin

Jessica Bains

Sylvain Boulineau

Frédéric Castaing

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

A compound of formula Li(NiMnCoAl)Owherein: a, b and c are non-zero; a+b+c+y=1; 1.05&#x2266;(1+x)/(1&#x2212;x)&#x2266;1.25; 0.015&#x2266;y(1&#x2212;x); and the atomic amount of manganese representing from 95% to 100% of the atomic amount of nickel.

Positive electrode material for a lithium ion accumulator

Growing community of inventors

Saint Selve, France

Laurence Croguennec