Birch, Stewart, Kolasch & Birch, LLP
Negative electrode active material for lithium secondary battery and method for preparing the same
A negative electrode active material including a core, an intermediate layer on a surface of the core, and a shell layer on a surface of the intermediate layer, wherein the core includes a silicon oxide of SiOx (0<x<2); the intermediate layer includes a lithium silicate, the shell layer includes lithium fluoride (LiF) and the intermediate layer is present in an amount of 5 wt %-15 wt % based on a total weight of the negative electrode active material. Also, a method for preparing the negative electrode active material, and a negative electrode and lithium secondary battery including the same. The negative electrode active material provides excellent initial efficiency and life characteristics.
LG ENERGY SOLUTION, LTD.
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Yong-Ju Jung-Hyun Il-Geun Je-Young
Lee Choi Oh Kim