Patent ID: 8586002

Claim:
A lithium titanium oxide for an anode active material for a lithium rechargeable battery, wherein the lithium titanium oxide consists of lithium titanate (Li 2 Ti 5 O 12 ) and titania(TiO 2 ); and wherein an X-ray diffraction (XRD) spectrum have a first peak of the lithium titanate (Li 4 Ti 5 O 12 ) and a second peak of the titania(TiO 2 ), a third peak of the lithium titanate (Li 4 Ti 5 O 12 ), and a fourth peak of the titania(TiO 2 ); wherein the first peak is in the range of about 78 to about 80 degrees, and the second peak is in the range of about 50 to about 55 degrees, and the third peak is in the range of about 45 to about 50 degrees, and the fourth peak is in the range of about 25 to about 30 degrees: wherein A 50-55 /A 78-80 is in the range of about 0.5 to about 2.0, where A 78-80 is an area of the first peak and A 50-55 is an area of the second peak, wherein a peak intensity of the third peak is higher than that of the fourth peak, and the lithium titanate has a diameter in the range of about 270 to about 450 nm.