Active material for cathode film, polyether polymer...

H - Electricity – 01 – M

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H01M 4/02 (2006.01) H01M 4/04 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2524357

An active material for a cathode film which comprises a lithium compound having a porosity of 0.36 or less; and a polyether polymer composition for a cathode film which comprises a polyether polymer, an electrode compound being soluble in said polymer and the above active material for a cathode film. The extrusion of the polyether polymer composition allows the production of a cathode film having a low and uniform thickness and exhibiting stable electric characteristics, with high productivity.

L'invention porte sur un matériau actif pour film cathodique, comportant un composé de lithium d'une porosité de 0,36 ou moins, sur une composition de polymère de polyéther pour film cathodique, sur un composé pour électrode soluble dans ledit polymère et dans ledit matériau actif. L'extrusion de la composition de polymère de polyéther permet de produire des films pour cathode d'épaisseur réduite et uniforme, de grande pureté, et aux caractéristiques électriques stables, avec un rendement élevé.

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