Patent ID: 8623552
Filing Date: 2014-01-07
Classification: H01M,Y02E

Abstract:
1. A negative active material for a rechargeable lithium battery comprising: a mechanically milled oxide capable of intercalating and deintercalating lithium ions, the oxide being represented by Formula 1 and having a full width at half maximum of an X-ray diffraction angle (2θ) at a (003) plane of 0.2 degrees or greater as measured by X-ray diffraction analysis using a CuK α ray: wherein 0.1≦x≦2.5, 0≦y≦0.5, 0.5≦z≦1.5, 0≦d≦0.5, and M is selected from the group consisting of Al, Cr, Mo, Ti, W, Zr, Mg, and combinations thereof, and wherein the oxide has an average particle diameter of less than 1 μm.