| 摘要 |
Disclosed herein is a composite material for use as an anode for Li-ion batteries and its preparation method and use. The composite material comprises the components represented by the following formula: <?in-line-formulae description="In-line Formulae" end="lead"?>Ma1-Xa2-Sed1-Yd2-Cc <?in-line-formulae description="In-line Formulae" end="tail"?> in which, M represents one or more selected from Sn, Al, Pb, Sb, Si and Bi; X represents one or more selected from Cu, V, Co, Ti, Mo, Mg, W and Zn; Y represents Si and/or Ge; and a1, a2, d1, d2 and c represent the weight ratio of M, X, Se, Y and C to the total amount of M, X, Se, Y and C, respectively, wherein a1+a2 is equal to 0.4-0.7, d1+d2 is equal to 0.05-0.6, c is equal to 0.01-0.25, d2/d1 ranges from 0 to 1/1.4, and a2/a1 ranges from 0 to 1/1.5.
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