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US 2023/0420657 A1Published application
Anode Active Material for Lithium Secondary Battery, Anode Active Material Slurry and Lithium Secondary Battery Including the Same
AssigneeSK On Co., Ltd.
InventorsGwi Ok Park, Ju Ho Chung, Joon Sup Kim, Eun Jun Park, Dong Il Jang
Life of this patent
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Abstract
According to embodiments of the present invention, there is provided an anode active material for a lithium secondary battery including a silicon oxide which includes a carbon coating layer on a surface thereof and is doped with magnesium. A ratio of peak area at 1303 eV to a sum of a peak area at 1304.5 eV and a peak area at 1303 eV, which appear in a Mg1s spectrum when measuring by X-ray photoelectron spectroscopy (XPS), is 60% or less.
Claims14
An anode active material for a lithium secondary battery comprising:
- a silicon oxide which comprises a carbon coating layer formed on a surface thereof, and is doped with magnesium,
- wherein a content of magnesium hydroxide remaining on the surface is less than 0.05% by weight based on a total weight of the silicon oxide.
Dependencies are inferred from the claim text.