Negative active material, negative electrode including the same, lithium secondary battery including negative electrode, and method of preparing negative active material
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United States of America Patent
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Aug 25, 2015
Grant Date -
Jan 3, 2013
app pub date -
Jun 11, 2012
filing date -
Jun 30, 2011
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Abstract
A negative active material comprising lithium titanate oxide having an area ratio of a diffraction peak of a (111) plane that appears at 2θ=18.3°±0.4 to a diffraction peak of a (311) plane that appears at 2θ=35.5°±0.4, in an XRD spectrum, in the range of about 2.2:1 to about 5.5:1, a negative electrode comprising the negative active material, a lithium secondary battery comprising the negative electrode, and a method of preparing the negative active material.
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