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US 11,605,811 B2Granted
Negative electrode active material, preparation method thereof, negative electrode including the negative electrode active material, and secondary battery including the negative electrode
AssigneeLG Energy Solution, Ltd.
InventorsSu Min Lee, Yong Ju Lee, Rae Hwan Jo, Dong Hyuk Kim
Life of this patent
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Abstract
A negative electrode active material including a core containing SiOx (0≤x<2) and a lithium-containing compound, and a shell disposed on the core and containing SiOx (0≤x<2) and magnesium silicate.
Claims9
A negative electrode active material, comprising:
- a core comprising SiOx (0≤x<2) and a lithium-containing compound comprising at least one selected from the group consisting of lithium silicate and lithium silicide, wherein the lithium silicate comprises at least one selected from the group consisting of Li2Si2O5, Li2SiO3, and Li4SiO4, and wherein the lithium silicide comprises LiySi (2<y<5);
- and
- a shell disposed on the core comprising the same SiOx (0≤x<2) and magnesium silicate,
- wherein the magnesium silicate comprises at least one selected from the group consisting of Mg2SiO4, and MgSiO3.
1 more element
Dependencies are inferred from the claim text.