CATHODE MATERIAL FOR LITHIUM SECONDARY BATTERIES AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME
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United States of America Patent
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Issued Date -
May 3, 2012
app pub date -
Mar 11, 2010
filing date -
Mar 11, 2009
priority date (Note) -
Abandoned
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Abstract
This invention relates to a positive electrode active material for a lithium secondary battery and a lithium secondary battery including the same, and particularly to a positive electrode active material for a lithium secondary battery, in which a lithium composite oxide having a composition of LiNi1-xMxO2 (wherein M represents one or a combination of two elements selected from the group consisting of Co, Al, Mn, Mg, Fe, Cu, Ti, Sn and Cr, and 0.96≦x≦1.05) is surface-modified using carbon or an organic compound, thereby achieving superior stability and improved high-rate capability compared to conventional positive electrode active materials, and to a lithium secondary battery including the same.
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