Process for preparing an at least partially lithiated...

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H01M 4/04 (2006.01) C01B 25/26 (2006.01) C07F 1/02 (2006.01) C25B 11/04 (2006.01) H01M 4/48 (2006.01)

Patent

CA 2550496

The invention relates to a process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which comprises providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt comprising an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. The invention also relates to lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.

La présente invention a trait à un procédé pour la préparation de matériau d'électrode réversible de ion-lithium oxyanionique de métal de transition contenant au moins en partie du lithium, comprenant la mise à disposition d'un précurseur dudit matériau d'électrode réversible de ion-lithium, le réchauffement dudit précurseur, la fusion dudit précurseur à une température suffisante pour produire une matière fondue comportant une phase liquide oxyanionique, le refroidissement de ladite matière fondue pour induire sa solidification et obtenir une électrode solide capable de cycles de désinsertion/d'insertion réversible d'ion-lithium destinée à être utilisée dans une batterie au lithium. L'invention a également trait à des matériaux d'électrode réversible d'ion-lithium oxyanionique contenant du lithium ou au moins en partie obtenus par ledit procédé.

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