Lithium secondary battery with high power

Details Lithium secondary battery with high power Lithium secondary battery with high power

H - Electricity

01

M

H01M 4/131 (2010.01) H01M 4/505 (2010.01) H01M 4/525 (2010.01) H01M 10/052 (2010.01)

Patent

CA 2561743

The present invention provides a non-aqueous electrolyte-based high power lithium secondary battery having a long-term service life and superior safety at both room temperature and high temperature, even after repeated high- current charging and discharging, wherein the battery comprises a mixture of a particular lithium manganese-metal composite oxide (A) having a spinet structure and a particular lithium nickel-manganese-cobalt composite oxide (B) having a layered structure, as a cathode active material.

L'invention concerne une batterie au lithium secondaire de puissance élevée à base d'un électrolyte non aqueux possédant une longue durée de vie utile et garantissant une sécurité supérieure à température ambiante et à température élevée, y compris après des charges et décharges de courant élevé répétées, la batterie comprenant comme matériau de cathode actif un mélange d'un oxyde composite (A) de lithium-manganèse-métal spécifique avec une structure spinelle et d'un oxyde composite (B) de lithium-nickel-manganèse-cobalt avec une structure à couches.

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