Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

H - Electricity

01

M

H01M 4/24 (2006.01) H01M 4/32 (2006.01) H01M 4/48 (2006.01) H01M 4/52 (2006.01)

Patent

CA 2214199

The invention provides a lithium secondary battery comprising a cathode having a lithium cobalt complex oxide or a lithium nickel complex oxide as a cathode active material, which is characterized in that said lithium cobalt complex oxide is in the form of hollow, spherical sinters of particles, and saidsinters have a mean particle diameter of from about 1 to 5 micrometers and a specific surface area of from about 2 to 10 m2/g. The lithium secondary battery has high capacity and excellent charge-discharge cycle characteristics.

L'invention propose un accumulateur électrique au lithium comportant une cathode d'oxyde de lithium cobalt ou d'oxyde de lithium nickel comme matière active; le complexe d'oxyde de lithium cobalt est caractérisé par la forme sphérique et creuse de ses pastilles, les pastilles en question ayant un diamètre d'environ 1 à 5 micromètres et un surface spécifique d'environ 2 à 10 m2/g. L'accumulateur électrique au lithium possède de hautes capacités et offre d'excellentes caractéristiques de cycle de charge-décharge.

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