NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
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United States of America Patent
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Aug 3, 2017
app pub date -
Oct 1, 2015
filing date -
Oct 2, 2014
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Abstract
The present invention relates to a negative electrode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including the negative electrode active material, wherein since the negative electrode active material includes a surface-treated silicon nanoparticle and the surface-treated silicon nanoparticle includes a silicon nanoparticle and a surface treatment layer which is disposed on a surface of the silicon nanoparticle and includes crystalline SiO2, the negative electrode active material may exhibit significantly improved initial efficiency characteristics as well as excellent lifetime and capacity characteristics when used in a battery.
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