| abstract |
The present invention relates to composite anode active material, preparation method, cathode and lithium secondary batteries.Composite anode active material includes: the clad in at least part on silicon materials and the surface for being formed in the silicon materials, wherein the clad and the silicon materials are chemically bonded, wherein the clad includes the silicon hydrogenated products of the C4-C30 alkene with end-C (=O) OR group, wherein R is hydrogen, C1-C5 alkyl, C2-C6 miscellaneous alkyl, C6-C12 aryl or C7-C13 aralkyl, and in addition to hydrogen each is substituted or unsubstituted. |