POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

摘要

A positive active material for a rechargeable lithium battery including a core including a compound being capable of intercalating and deintercalating lithium and the lithium metal phosphate positioned on the surface of the core, the lithium metal phosphate is represented by Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same.;Li1+(x+y)AxByTi2−(x+y)(PO4)3   Chemical Formula 1;In Chemical Formula 1, A, B, x and y are the same as defined in the detailed description.

主权项

1. A positive active material for a rechargeable lithium battery, comprising:
a core comprising a compound capable of intercalating and deintercalating lithium; and a lithium metal phosphate on the surface of the core, wherein the lithium metal phosphate is different from the compound capable of intercalating and deintercalating lithium and is represented by Chemical Formula 1:
Li1+(x+y)AxByTi2−(x+y)(PO4)3   Chemical Formula 1 wherein in Chemical Formula 1, A is a tetravalent element, B is a divalent element, 0