Anode material for lithium secondary cell with high capacity
AssigneeLG Chem, Ltd.
InventorsYou Kim, Ki Lee, Seo Lee, Suk Roh, Ou Kwon
Life of this patent
Estimating the term…
Abstract
Disclosed is an anode material comprising a metal core layer capable of repetitive lithium intercalation/deintercalation; an amorphous carbon layer coated on the surface of the metal core layer, and a crystalline carbon layer coated on the amorphous carbon layer. The anode material not only maintains a high charge/discharge capacity, which is an advantage of a metal-based anode material, but also inhibits changes in the volume of a metal core layer caused by repetitive lithium intercalation/deintercalation in virtue of an amorphous carbon layer and a crystalline carbon layer, thereby improving the cycle life characteristics of cells.
Claims15
An anode material comprising:
- a metal core layer capable of repetitive lithium intercalation/deintercalation;
- an amorphous carbon layer coated on the surface of the metal core layer;
- and
- a crystalline carbon layer coated on the amorphous carbon layer.
A secondary cell using an anode material, the anode material comprising:
- a metal core layer capable of repetitive lithium intercalation/deintercalation;
- an amorphous carbon layer coated on the surface of the metal core layer;
- and
- a crystalline carbon layer coated on the amorphous carbon layer.
Dependencies are inferred from the claim text.