Prayon

Prayon Technologies

Commissariat a L'energie Atomique

Hydrometal Sa

Alain Germeau

Sébastien Martinet

Alain M Gourgue

Sébastien Patoux

Sébastien Launois

Bernard Heptia

Dorina Fati

Isabelle Willems

Tomizio Guidi

Alain Gourgue

A method and device for producing polyphosphoric acid burns a fuel in combustion air in a combustion chamber, sprays a spray fluid comprising substantially pure orthophosphoric acid and undertakes polymerization-condensation of the pure orthophosphoric acid. A polyphosphoric acid in the form of an acid mist accompanied by formation of gases which mix with combustion gases resulting from burning of the fuel is formed to reach a predetermined temperature, wherein the mixture causes sudden lowering of combustion gas temperature. The acid mix is separated from the gas mixture and the polyphosphoric acid is collected at a bottom of the combustion chamber and the gas mixture is outputted via a lower part of the combustion chamber separate from the collection of polyphosphoric acid.

Method and device for producing polyphosphoric acid

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

Growing community of inventors

Auderghem, Belgium

Alain Germeau