Samsung Sdi Co., Inc.

Kyouyoon Sheem

Jihyun Kim

Sooyoun Park

Changwook Kim

Hyunjoo Je

A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The positive active material includes a lithium intercalation compound and a Si-containing TiOpresent on the surface of the compound. When TiOis present on the surface of the lithium intercalation compound, the rate characteristics and low temperature characteristics of batteries including the lithium intercalation compound may be improved. Further, when Si-containing TiOis present on the surface of the lithium intercalation compound, the cycle-life characteristic and high temperature storage characteristics of batteries including the lithium intercalation compound may be further improved, compared to batteries having only TiO. As such, the positive active material including Si-containing TiOprovides a rechargeable lithium battery having excellent rate capability, low temperature characteristics, cycle-life characteristics and high temperature storage characteristics.

Growing community of inventors

Yongin-si, South Korea

Kyouyoon Sheem