| 摘要 |
The present invention relates to a porous composite and a method producing same, wherein the porous composite is represented by chemical formula 1 and has porosity of 5 to 90% (Chemical Formula 1: MOx). In the formula: M is at least one element selected from the group consisting of Si, Sn, Al, Sb, Bi, As, Ge, Pb, Zn, Cd, In, Ti, Ga, and an alloy thereof; and x satisfies 0.5<x<1. In the present invention, by means of a mechanical alloying procedure, a mole ratio (x) of oxygen to a mole ratio of metal (semimetal) in the porous composite represented by chemical formula 1 is controlled, so that the initial efficiency of a secondary battery can be improved. Also, the porous composite satisfies the porosity so that a change in thickness of an electrode generated when the secondary battery is charged and discharged is reduced and lifespan properties can be improved. |
