Negative Active Material For a Rechargeable Lithium Battery, a Method of Preparing the Same, and a Rechargeable Lithium Battery Comprising the Same

摘要

The negative active material for a rechargeable lithium battery of the present invention includes a carbonaceous material and a silicon-based compound represented by Formula 1: <?in-line-formulae description="In-line Formulae" end="lead"?>Si(1-y)MyO1+x (1)<?in-line-formulae description="In-line Formulae" end="tail"?> where 0<y<1, -0.5<=x<=0.5, and M is selected from the group consisting of Mg, Ca, and mixtures thereof.