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US 2020/0403235 A1Published application
Negative electrode active material for lithium secondary battery and preparation method thereof
AssigneeLG Chem, Ltd.
InventorsYong Ju LEE, Rae Hwan JO, Su Min LEE, Dong Hyuk KIM, Se Mi PARK
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Abstract
A negative electrode active material for a lithium secondary battery, which includes a silicon-based particle represented by M-SiOx, wherein M is Li, Mg, Ca, Al, or Ti, and 0≤x<2, wherein the M-SiOx includes an amorphous phase at 20 wt % to 70 wt % based upon a total weight of the M-SiOx, thereby exhibiting excellent initial efficiency and lifespan characteristics, and a preparation method thereof.
Claims14
A negative electrode active material for a lithium secondary battery, comprising
- a silicon-based particle represented by M-SiOx, wherein M is Li, Mg, Ca, Al, or Ti, and 0≤x<2,
- wherein the M-SiOx comprises a crystalline phase and an amorphous phase, and
- wherein the amorphous phase is present in an amount of 20 wt % to 70 wt % based upon a total weight of the M-SiOx.
Dependencies are inferred from the claim text.