A composite anode active material method of preparing the same and lithium secondary batter comprising an anode including the composite anode active material

摘要

A silicon-containing amorphous matrix represented by; A plurality of carbon-based particles contained in the matrix; And a carbon coating layer disposed on the surface of the amorphous matrix, wherein the Wherein x is 0.1x0.6, the silicon-containing amorphous matrix relates to a composite negative electrode active material including silicon particles having a particle diameter of 5 nm or less, a method for preparing the same, and a lithium secondary battery including the same.