ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND PREPARATION THEREOF
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United States of America Patent
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Aug 25, 2014
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Feb 28, 2012
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Abstract
The present invention relates to an electrode active material for a lithium secondary battery and the preparation thereof. The electrode active material for a lithium secondary battery according to the present invention comprises a core including (a) first particulates consisting of an oxide of a metal (metalloid) capable of alloying with lithium, and (b) second particulates consisting of an oxide containing the same metal (metalloid) together with lithium; and a conductive carbon layer coated on the surface of the core. The electrode active material of the present invention has high capacity and improved electric conductivity, thereby providing good charge and discharge rate capability.
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