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.