Method of making active materials for use in secondary...

Details Method of making active materials for use in secondary... Method of making active materials for use in secondary...

C - Chemistry, Metallurgy

01

B

C01B 25/45 (2006.01) C01B 25/26 (2006.01) H01M 4/1397 (2010.01)

Patent

CA 2696784

The present invention provides for the two step preparation of lithium vanadium phosphate by pre-treatment of a mixture of precursor materials via high pressure at relatively low temperatures in water (hydrothermal pretreatment) and then calcining such hydrothermally pretreated precursors at relatively high temperatures for a period of time sufficient to produce lithium vanadium phosphate. The lithium vanadium phosphate so produced finds use in producing electrodes for electrochemical cells.

La présente invention concerne la préparation en deux étapes de phosphate de lithium-vanadium par prétraitement d'un mélange de matériaux précurseurs à haute pression et à des températures relativement basses dans l'eau (prétraitement hydrothermique), puis par calcination desdits précurseurs ayant subi un prétraitement hydrothermique à des températures relativement élevées pendant une durée suffisante pour obtenir du phosphate de lithium-vanadium. Le phosphate de lithium-vanadium ainsi produit peut être utilisé dans la fabrication d'électrodes pour cellules électrochimiques.

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