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US 2019/0296336 A1Published application
A composite anode active material, method of preparing the composite anode material, and lithium secondary battery comprising the composite anode active material
AssigneeUnist (Ulsan National Institute of Science and Technology)
InventorsJaephil Cho, Jaekyung Sung, Seong Hyeon Choi, Jiyoung MA, Yoonkwang Lee
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Abstract
Provided is a composite anode active material including: a carbonaceous material; a metal alloyable with lithium, located on a surface of the carbonaceous material; and a silicon coating layer located on a surface of the carbonaceous material, on a surface of the metal alloyable with lithium, or a combination thereof.
Claims20
A composite anode active material comprising:
- a carbonaceous material;
- a metal alloyable with lithium, located on a surface of the carbonaceous material;
- and
- a silicon coating layer located on a surface of the carbonaceous material, on a surface of the metal alloyable with lithium, or a combination thereof.
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A method of preparing a composite anode active material, the method comprising:
- preparing a composite anode active material precursor by mixing a mixture of a carbonaceous material and a metal alloyable with lithium;
- and
- forming a silicon coating layer on a surface of the composite anode active material precursor,
- wherein the forming of the silicon coating layer is performed by depositing silicon through chemical vapor deposition (CVD) of a silane gas.
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Dependencies are inferred from the claim text.