ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME
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United States of America Patent
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Issued Date -
Jan 23, 2014
app pub date -
Oct 31, 2012
filing date -
Jul 19, 2012
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Abstract
An anode active material for a lithium secondary battery having a high capacity and a high efficiency of charge discharge characteristics. The anode active material includes a silicon mono-phase and an alloy phase formed of silicon with a metal element at least one selected from the group consisting of Ti, Ni, Cu, Fe, Mn, Al, Cr, Co, and Zn. The anode active material is a powder in which the silicon mono-phase is uniformly distributed in a matrix of the alloy phase, has particle size distribution defined as D0.1 and D0.9, and the value of D0.1-D0.9 is in a range from about 3 μm to about 15 μm.
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