Electrode material with enhanced ionic transport properties

Details Electrode material with enhanced ionic transport properties Electrode material with enhanced ionic transport properties

C - Chemistry, Metallurgy

01

B

C01B 25/45 (2006.01) H01M 4/136 (2010.01) H01M 4/1397 (2010.01) H01M 4/58 (2010.01)

Patent

CA 2596809

Materials useful as electrodes for lithium batteries have very good electronic and ionic conductivities. They are fabricated from a starting mixture which includes a metal, a phosphate ion, and an additive which enhances the transport of lithium ions in the resultant material. The mixture is heated in a reducing environment to produce the material. The additive may comprise a pentavalent metal or a carbon. In certain embodiments the material is a two- phase material. Also disclosed are electrodes which incorporate the materials and lithium batteries which incorporate those electrodes.

L'invention concerne des matières utiles en tant qu'électrodes pour des batteries au lithium, présentant une très bonne conductivité électronique et ionique. Ces matières sont fabriquées à partir d'un mélange de base comprenant un métal, un ion phosphate et un additif qui améliore le transport des ions lithium dans la matière obtenue. Le mélange de l'invention est chauffé dans un environnement de réduction pour produire la matière de l'invention. L'additif de l'invention peut comprendre un métal pentavalent ou un carbone. Dans certains modes de réalisation, la matière de l'invention est une matière biphasique. L'invention concerne également des électrodes intégrant les matières de l'invention et des batteries au lithium qui intègrent ces électrodes.

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