Cathode for lithium secondary battery

H - Electricity – 01 – M

Patent

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Details

H01M 10/24 (2006.01) H01M 4/62 (2006.01) H01M 10/38 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2228644

A cathode for a lithium secondary battery wherein the surface of the cathode of which a composition containing a cathode active material, a conductive substance and a binder is supported on a current collector, is coated with at least one ion-permeable resin selected from resins having a temperature of deflection under load (measured at 18.6 kg/cm2 load according to JIS K 7207) not lower than 100 °C, provide a lithium secondary battery with high energy density having improved safety.

Une cathode pour pile secondaire au lithium dont la surface comporte une composition comprenant une matière active cathodique, une substance conductrice et un liant et supportée par un collecteur de courant, est revêtue d'au moins une résine perméable aux ions choisie parmi les résines ayant une température de fléchissement sous charge (mesurée avec une charge de 18,6 kg/cm2 conformément à la norme JIS K 7207) qui n'est pas inférieure à 100 degrés C, donne une pile secondaire au lithium présentant une densité d'énergie élevée et des caractéristiques de sécurité améliorées.

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