Anode active material, manufacturing method thereof, anode and secondary battery including the same
AssigneeIndustry-Academic Cooperation Foundation, Dankook University
InventorByoungsun LEE
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Abstract
The present invention relates to an anode active material, a method of manufacturing the anode active material, and an anode and a secondary battery including the anode active material, the anode active material including secondary carbon particles formed by flocculation of a plurality of primary carbon particles having an average particle diameter (D50) in a range from 5 to 200 nm, wherein the secondary carbon particles have an average particle diameter (D50) in a range from 0.5 to 20 μm.
Claims16
An anode active material for a secondary battery comprising:
- secondary carbon particles formed by flocculation of a plurality of primary carbon particles having an average particle diameter (D50) in a range from 5 to 200 nm,
- wherein the secondary carbon particles have an average particle diameter (D50) in a range from 0.5 to 20 μm, a specific surface area in a range from 0.5 to 100 m2/g, and a spherical porous structure.
A method of manufacturing an anode active material for a secondary battery, the method comprising:
- (S100) forming a first solution by dissolving a carbonization precursor polymer and a sacrificial polymer in a first solvent which is a common solvent;
- (S200) forming a first aggregate by removing the first solvent from the first solution;
- and
- (S300) carbonizing the first aggregate, or carbonizing a second aggregate formed by removing the sacrificial polymer from the first aggregate.
Dependencies are inferred from the claim text.