Electrode active material comprising an amorphous...

Details Electrode active material comprising an amorphous... Electrode active material comprising an amorphous...

H - Electricity

01

M

H01M 4/36 (2006.01) H01M 4/02 (2006.01)

Patent

CA 2664801

Electrode active material of the invention is such that a Li3PO4 phase is mixed in with an amorphous iron-phosphate complex having a LixFePyOz composition. Applying the electrode active material of the invention to a secondary battery inhibits an irreversible reaction which reduces the irreversible capacity, thus enabling a high capacity to be maintained even when it is used at a high potential.

Cette invention concerne un matériau actif d'électrode comprenant une phase Li3PO4 mélangée avec un complexe fer-phosphate amorphe présentant une composition LixFePyOz. L'application du matériau actif d'électrode décrit dans cette invention à une batterie secondaire permet de bloquer une réaction irréversible qui réduit la capacité irréversible, ce mode de réalisation permet de maintenir une capacité élevée y compris dans des conditions d'utilisation à haute tension.

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