Negative electrode for lithium secondary battery and method of manufacturing the same

Abstract

Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based negative electrode active material including iron and aluminum, wherein in ICP analysis of a negative electrode active material layer including the silicon-based negative electrode active material, contents of elements in the negative electrode active material layer satisfy the following Relations (1) to (3): A / ( B 2 + C 2 ) ≤ 4 , 500 ( 1 ) 5 ≤ B ≤ 1 , 500 ( 2 ) 3 ≤ C ≤ 1 , 000 ( 3 ) wherein A is a Li content in ppm, B is an Fe content in ppm, and C is an Al content in ppm, based on the total weight of the ICP-analyzed negative electrode active material layer.

Dependencies are inferred from the claim text.