Anode active material for a secondary battery, a manufacturing method thereof, and a secondary battery including the same
AssigneeDong-A University Research Foundation for Industry-Academy Cooperation
InventorsJung Kyoo LEE, Chan Sik SON, Jung Woo BAE, Jae Wook SEO, Se Eun PARK
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Abstract
An anode active material for a secondary battery includes porous silicon particles and carbon-based particles surrounding at least a portion of the porous silicon particles, wherein the porous silicon particles include mesopores therein configured to accommodate volume expansion of silicon during charge and discharge, and the anode active material may have a controlled pore volume and improved structural stability.
Claims18
An anode active material for a secondary battery, comprising:
- porous silicon particles;
- and
- carbon-based particles surrounding at least a portion of the porous silicon particles,
- wherein mesopores are included inside a plurality of the porous silicon particles surrounded by the carbon-based particles.
A method for manufacturing an anode active material for a secondary battery, comprising:
- an impregnation step of impregnating porous silicon particles with a polymer template;
- a coating step of coating carbon-based particles onto the porous silicon particles impregnated with the polymer template;
- and
- a carbonization step of carbonizing the porous silicon particles coated with the carbon-based particles subsequent to the coating step.
A secondary battery comprising an anode active material, the anode active material including:
- porous silicon particles;
- and
- carbon-based particles surrounding at least a portion of the porous silicon particles,
- wherein mesopores are included inside a plurality of the porous silicon particles surrounded by the carbon-based particles.
Dependencies are inferred from the claim text.