Active material for anode of secondary cell and method for...

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H01M 4/48 (2006.01) H01M 4/02 (2006.01) H01M 10/40 (2006.01) H01M 10/54 (2006.01) H01M 6/10 (2006.01)

Patent

CA 2374245

An active material for an anode comprising a metal oxide for use in a non- aqueous electrode secondary cell, characterized in that the metal oxide contains coarse particles, which have a particle diameter of 600 % or more relative to an average particle diameter thereof, in a content of 1 volume % or less, and contains high density particles, which have a density of 150 % relative to an average density thereof, in a content of 1000 mass ppm or less. The active material can be used for enhancing the performance of a cell and improving the yield of production of a cell.

L'invention porte sur un matériau actif destiné à une anode et comprenant un oxyde métallique destiné à être utilisé dans une cellule secondaire d'électrode non aqueuse. Ce matériau se caractérise en ce que l'oxyde métallique contient des particules grossières ayant un diamètre égal ou supérieur à 600 % par rapport à un diamètre de particule moyen, ces particules représentant un volume égal ou inférieur à 1 %. L'oxyde métallique contient également des particules de haute densité, à savoir une densité de 150 % par rapport à une densité moyenne, dans une teneur égale ou inférieure à 1000 ppm en masse. Le matériau actif peut être utilisé pour améliorer la performance d'une cellule et accroître sa production.

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