Secondary battery

H - Electricity – 01 – M

Patent

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Details

H01M 4/62 (2006.01) H01M 4/66 (2006.01) H01M 10/42 (2006.01) H01M 2/34 (2006.01) H01M 6/10 (2006.01) H01M 6/16 (2006.01) H01M 6/50 (2006.01) H01M 10/40 (2006.01) H01M 4/52 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2106066

A secondary battery is disclosed, comprising an organic electrolytic solution contained in a casing and, disposed therein, a positive electrode comprised of a lithium-containing composite metal oxide as a cathode active material and a negative electrode com- prised of a carbonaceous material as an anode active material, wherein the positive and negative electrodes are arranged through a separator disposed therebetween and wherein the organic electrolytic solution has a water content of from 5 ppm to 450 ppm. The secondary battery has excellent current efficiency, cycle charac- teristics, storage characteristics and safety and, therefore, can be advantageously used in various elec- tric devices and electronic devices. The secondary battery of the present invention is especially advanta- geous in that a portable electronic device containing an IC element operative at a voltage of from 2.6 to 3.5 V can be drived by the use of a single battery of the present invention.

ile secondaire comprenant une solution électrolytique organique contenue dans une enveloppe où sont disposées une électrode positive constituée d'un oxyde métallique lithinifère composé servant de matériau actif pour la cathode, et une électrode négative constituée d'un matériau carboné servant de matériau actif pour l'anode, les électrodes positive et négative étant isolées l'une de l'autre au moyen d'un séparateur et la solution électrolytique ayant une teneur en eau comprise entre 5 ppm et 450 ppm. Cette pile secondaire est excellente du point de vue du rendement en courant, des caractéristiques de cycle, des caractéristiques d'accumulation et de la sécurité. Elle peut donc être utilisée avantageusement dans divers dispositifs électriques et électroniques, en particulier du fait qu'une seule pile de ce type suffit pour alimenter un dispositif électronique portatif contenant un élément à circuit intégré fonctionnant sous une tension de 2,6 à 3,5 V.

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