Negative electrode active material for lithium secondary battery and lithium secondary battery comprising the same

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United States of America

PATENT NO 11942640
SERIAL NO

17420592

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Provided is a negative electrode active material for a lithium secondary battery which includes: a silicon-silicon oxide-magnesium silicate composite comprising a silicon oxide (SiOx, 03 crystal grains and Mg2SiO4 crystal grains present in the silicon oxide matrix, wherein the MgSiO3 crystal grains have a crystal size of 5-30 nm and the Mg2SiO4 crystal grains have a crystal size of 20-100 nm in the silicon-silicon oxide-magnesium silicate composite, and the content ratio of MgSiO3 crystal grains to Mg2SiO4 crystal grains is 2:1-1:1 on the weight basis. A method for preparing the negative electrode active material for a lithium secondary battery is also provided.

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Patent OwnerAddress
LG ENERGY SOLUTION LTDTOWER 1 108 YEOUI-DAERO YEONGDEUNGPO-GU SEOUL 07335 REPUBLIC OF KOREA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Dong-Hyuk Daejeon, KR 52 699
Lee, Yong-Ju Daejeon, KR 74 804
Oh, Il-Geun Daejeon, KR 8 4

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