Anode composition, anode for lithium secondary battery, comprising same, lithium secondary battery, and method for preparing anode composition

A method for preparing a negative electrode composition, the method comprising:

• mixing a negative electrode conductive material with water to form a first mixture;
• and
• mixing the mixture with a silicon-based active material and graphite to form a second mixture,
• wherein the graphite comprises natural graphite and artificial graphite,
• the silicon-based active material comprises silicon oxide represented by SiOx (0<x<2), and
• the BET specific surface area values of the silicon oxide represented by SiOx (0<x<2), the natural graphite and the artificial graphite are larger in the order of artificial graphite<natural graphite<silicon oxide represented by SiOx (0<x<2).

A lithium secondary battery comprising:

• a positive electrode;
• the negative electrode for a lithium secondary battery according to 15;
• and
• a separator provided between the positive electrode and the negative electrode.