| 摘要 |
PURPOSE: A silicon-based anode active material for a secondary lithium battery is provided to improve the break of the silicon and alloy, to prevent the lifetime of the battery from being fallen by controlling sudden generation of cracks, and to prevent the reduction of conductivity of the anode active materials. CONSTITUTION: A silicon-based anode active material comprises: silicon powder 100.0 parts by weight; a transition metal 5~80 parts by weight which is selected from Cu, Zr, Ni, Ti, Co, Cr, V, Mn, and Fe; metal 1~30 parts by weight which does not form an intermetallic compound with silicon and is selected from Ag, Al, Pb, Sn, and Zn; and carbon materials 0.1~5 parts by weight. The carbon material is selected from graphite powder, carbon inorganic material powder, carbon powder, carbon nanotubes, and carbon nanofibers. |
