CATHODE MATERIAL, PREPARING METHOD THEREOF AND LITHIUM SECONDARY BATTERY

PURPOSE: A nonaqueous lithium secondary battery is provided to improve a discharge rate property at low temperature and a battery capacity, and to have high-power and high energy density. CONSTITUTION: A nonaqueous lithium secondary battery comprises an anode, a cathode, and a nonaqueous liquid elec...

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Bibliographic Details
Main Authors KASAI MASAHIRO, YUASA TOYOTAKA, NAKAJIMA GENEI
Format Patent
LanguageEnglish
Korean
Published 11.11.2011
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:PURPOSE: A nonaqueous lithium secondary battery is provided to improve a discharge rate property at low temperature and a battery capacity, and to have high-power and high energy density. CONSTITUTION: A nonaqueous lithium secondary battery comprises an anode, a cathode, and a nonaqueous liquid electrolyte. The anode contain an anode material which forming a second particle nucleated by a plurality of first particles(1). In a cross-sectional diagram of the second particle, the length of the binding of the first particles is 10-70% relative to whole surrounding length and the secondary particle is a Lia_Mnx_Niy_Coz_O2 and comprises composite oxide layer structure crystals in which 1<=a<=1.2, 0<=x<=0.65, 0.33 <=y<0.5, 0<=z<=0.65, and x+y+z=1.
Bibliography:Application Number: KR20110110157