Centre National De La Recherche Scientifique

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

Mickael Dolle

Carole Bourbon

Philippe Belleville

Alexandre Allemand

Sébastien Patoux

Yann Le Petitcorps

Patrick Rozier

Romain Billard

Erwan Dumont-Botto

Patrick Rosier

The invention relates to a method for preparing a material based on an aluminosilicate selected from barium aluminosilicate BAS, barium-strontium aluminosilicate BSAS, and strontium aluminosilicate SAS, said aluminosilicate consisting of aluminosilicate with a hexagonal structure, characterised in that it includes a single sintering step in which a mixture of powders of precursors of said aluminosilicate, including an aluminium hydroxide Al(OH)powder, are sintered by a hot-sintering technique with a pulsed electric field SPS; whereby a material based on an aluminosilicate, said aluminosilicate consisting of an aluminosilicate with a hexagonal structure is obtained. The material based on an aluminosilicate prepared by said method can be used in a method for preparing a composite material consisting of an aluminosilicate matrix reinforced by reinforcements made of metalloid or metal oxide.

Method for preparing a material made from aluminosilicate and method for preparing a composite material having an aluminosilicate matrix

A method of synthesis of a metal fluorophosphate having the following general formula (1): XM(PO)F(1), in which: X is an alkaline metal selected among sodium (Na) and lithium (Li) or a mixture of said metals; M is a transition metal selected among the following elements: Co, Ni, Fe, Mn, V, Cu, Ti, Al, Cr, Mo, Nb or a combination of at least two of said metals, 0&#x2266;a&#x2266;5; 0.5&#x2266;b&#x2266;3; 0.5&#x2266;c&#x2266;3; and d is an integer equal to 1, 2 or 3. The method contains an electric-field-activated sintering process for a mixture (1) formed by at least one first phosphate-containing solid precursor and at least one second fluorine-containing solid precursor.

Metal fluorophosphate synthesis and use as an active material for a battery electrode

Growing community of inventors

Flesselles, France

Mickael Dolle