| 摘要 |
A negative active material for a rechargeable lithium battery includes a lithium vanadium composite oxide represented by Li<SUB>x</SUB>M<SUB>y</SUB>V<SUB>z</SUB>O<SUB>2+d</SUB>, where: <?in-line-formulae description="In-line Formulae" end="lead"?>0.1<=x<=2.5, 0<=y<=0.5, 0.5<=z<=1.5, 0<=d<=0.5,<?in-line-formulae description="In-line Formulae" end="tail"?> and M is selected from the group consisting of Al, Cr, Mo, Ti, W, Zr, and combinations thereof) and a compound attached to the surface of the vanadium composite oxide. The compound includes an element selected from the group consisting of Groups 2 to 15 elements and combinations thereof. The negative active material can provide good energy density per volume and high-capacity, to provide a battery having good cycle-life and safety.
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