| 摘要 |
A negative active material (10) for a rechargeable lithium battery includes a core (20) including an active material capable of performing reversible electrochemical oxidation and reduction, and a coating layer (30) on the surface of the core. The coating layer includes a reticular structure including -O-M-O- (31) wherein M is selected Si, Ti, Zr, Al, or combinations thereof and an organic functional group (32) linked to M as a side chain. The organic functional group is selected from the group consisting of an alkyl group, a haloalkyl group, a substituted or unsubstituted aryl group, and combinations thereof. The negative active material for a rechargeable lithium battery according to the present invention can be applied along with an aqueous binder, and improve high capacity, good cycle-life, and particularly high capacity during charge and discharge at a high rate. |
