Silicon-containing negative electrode active material, negative electrode including same, and secondary battery including same

Abstract

A silicon-containing negative electrode active material including a core and a carbon layer disposed on the core, in which the core includes SiOx, wherein 0<x<2 and at least one metal atom, the at least one metal atom includes at least one selected from the group consisting of Mg, Li, Al and Ca, D5/D50 is 0.5 or more, D5 is 3 μm or more, and D50 is 4 μm or more and 11 μm or less, a negative electrode including the same, and a secondary battery including the same.

Dependencies are inferred from the claim text.