Patent Number: 8,822,079

Title: Composite anode active material for lithium rechargeable battery, method of preparing the same and lithium rechargeable battery using the material

Abstract: A composite anode active material includes a first intermetallic compound, a second intermetallic compound, a metal that is incapable of alloy formation with lithium, and carbon. In the composite anode active material, an amorphous carbon is present between the first intermetallic compound and the second intermetallic compound, and the metal that is incapable of alloy formation with lithium is uniformly distributed throughout in the composite anode active material. The composite anode active material may be used as an anode of a lithium rechargeable battery.

Inventors: Kim; Gue-sung (Yongin-si, KR), Kim; Han-su (Seoul, KR), Im; Dong-min (Seoul, KR)

Assignee: Samsung SDI Co., Ltd.

International Classification: H01M 4/58 (20100101); H01M 4/52 (20100101); B23Q 11/00 (20060101)

Expiration Date: 9/02/12018