Lithium-ion battery negative electrode material with improved reversibility, and method for manufacturing same

A method for producing a negative electrode material for a lithium secondary battery, the method comprising:

• preparing a solution by mixing a nano-silicon slurry, a carbon nanotube slurry, and crystalline carbon;
• preparing a first precursor by spray drying the solution;
• mixing the first precursor and amorphous carbon, filling a mold with the mixture, performing pressurization at a high temperature, and then performing carbonization to produce a carbonized block;
• preparing a second precursor by mixing and coating the produced carbonized block with amorphous carbon;
• and
• carbonizing and classifying the second precursor,
• wherein the preparing of the first precursor by spray drying the solution includes controlling an average particle size (D50) of the first precursor to 8 μm to 30 μm.