THE CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES AND THE PREPARATION METHOD THEREOF

PURPOSE: A cathode active material for lithium secondary battery is provided to improve the cycle life, capacity and service life at high temperature of a battery, due to its electrochemical stability in a wide range of voltage. CONSTITUTION: The cathode active material for a lithium secondary batte...

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Bibliographische Detailangaben
Hauptverfasser:	SONG, JUN HO, OH, SEUNG MO, LEE, JONG HWA, KANG, EUN YEONG
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 cathode active material for lithium secondary battery is provided to improve the cycle life, capacity and service life at high temperature of a battery, due to its electrochemical stability in a wide range of voltage. CONSTITUTION: The cathode active material for a lithium secondary battery having 0.1-20 micrometer of particle size, comprises: a compound selected from Lix£Li(y/3)A(2y/3)Co(1-y)\|O2zBO2 and Lix£Li(y/3)A(2y/3)Co(1-y)\|O2zLi2BO3, in which A is selected from Ti, Mn and Ni; B is selected from Zr, Mo, Ru and Sn; and x, y and z satisfy the following inequalities: 0.9