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US 2024/0178377 A1Published application
Anode active material, method of preparing the same, and lithium secondary battery including the same
AssigneeHansol Chemical Co., Ltd.
InventorsJeonghun Lee, Hyeonwoo Shim, Wooyeong Choi, Jongha Lee, Seman Kwon
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Abstract
Provided are an anode active material including a core including metal particles, and a shell layer formed on an outer portion of the core, in which the shell layer includes metal carbide particles and a carbon-based material, and a number density (number/μm2) of the metal carbide particles in the shell layer is 50 or more to 100 or less, a method of preparing the same, and a lithium secondary battery including the same.
Claims15
An anode active material comprising:
- a core comprising metal particles;
- and
- a shell layer formed on an outer portion of the core,
- wherein the shell layer comprises metal carbide particles and a carbon-based material, and
- wherein a number density (number/μm2) of the metal carbide particles in the shell layer is 50 or more to 100 or less.
2 more elements
A method of preparing an anode active material, the method comprising:
- step S1 of dispersing metal nanoparticles in a solvent;
- step S2 of preparing a spherical metal precursor powder by spray-drying the dispersed solution;
- step S3 of mixing and compounding the spherical metal precursor powder with an amorphous carbon precursor and crystalline carbon;
- and
- step S4 of performing a heat treatment at 1100° C. to 1400° C. for 3 to 8 hours.
2 more elements
Dependencies are inferred from the claim text.