LITHIUM SECONDARY BATTERY AND PREPARATION METHOD THEREOF

PURPOSE: A lithium secondary battery and its preparation method are provided, to obtain high energy density, to promote lithium diffusion velocity in an electrolyte solution and to improve high rate charge/discharge characteristics. CONSTITUTION: The lithium secondary battery comprises a lithium pos...

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Bibliographische Detailangaben
1. Verfasser:	SON, YEONG SU
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	PURPOSE: A lithium secondary battery and its preparation method are provided, to obtain high energy density, to promote lithium diffusion velocity in an electrolyte solution and to improve high rate charge/discharge characteristics. CONSTITUTION: The lithium secondary battery comprises a lithium positive electrode using a lithium manganese oxide active material represented by LixMn2O4; a negative electrode; and an electrolyte, wherein the surface of the lithium manganese oxide active material is coated with a lithium-cobalt-magnesium-oxygen quaternary oxide compound represented by LixCoyMgyO2, wherein 0.1