Anode active material, anode including the anode active material, method of manufacturing the anode, and lithium battery including the anode
AssigneeSamsung Electronics Co., Ltd.
InventorsJeong-hee Lee, Ho-suk Kang, Jeong-na Heo
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Abstract
An anode active material for lithium batteries, an anode including the anode active material, a method of manufacturing the anode, and a lithium battery including the anode. The anode active material includes secondary particles formed of agglomerated primary nanoparticles. The primary nanoparticles include a non-carbonaceous material bound with hollow carbon nanofibers. The anode includes the anode active material and a polymeric binder having an electron donor group.
Claims20
An anode active material comprising primary nanoparticles comprising a non-carbonaceous material bound with hollow carbon nanofibers, wherein the primary nanoparticles are agglomerated into secondary particles.
An anode comprising:
- a current collector;
- and
- an active material layer formed on the current collector, the active material layer comprising,
- an anode active material comprising primary nanoparticles comprising a non-carbonaceous material bound to hollow carbon nanofibers, the primary nanoparticles being agglomerated into secondary particles, and
- a polymeric binder having an electron donor group.
A method of manufacturing an anode, the method comprising:
- milling a non-carbonaceous material and hollow carbon nanofibers in an organic solvent, to form a mixture;
- drying the mixture to prepare an anode active material comprising secondary particles comprising agglomerated primary nanoparticles, the primary nanoparticles comprising the hollow carbon fibers attached to the non-carbonaceous material;
- mixing the anode active material, a binder, and a solvent to prepare an anode active material composition;
- coating the anode active material composition on a current collector;
- and
- drying the coated anode active material composition, to form the anode.
An anode active material composition comprising:
- secondary particles comprising agglomerated primary nanoparticles, the primary nanoparticles comprising hollow carbon fibers attached to a silicon-based material;
- and
- a polymeric binder having an electron donor group.
Dependencies are inferred from the claim text.