NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR, NEGATIVE ELECTRODE ACTIVE MATERIAL COMPOSITION FOR LITHIUM SECONDARY BATTERY USING NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode material for lithium secondary battery having a sufficient charge discharge capacity, Coulomb efficiency and cycle characteristics.SOLUTION: A negative electrode material for lithium secondary battery contains nano carbon, a silicon material, and carbon nano-tubes. The negative electrode material for lithium secondary battery is obtained by adding a silicon material and carbon nano-tubes after substituting a first organic solvent for the nano-carbon oxide aqueous dispersion, and then performing reduction. The negative electrode material can especially enhance the cycle characteristics, when compared with the case only of silicon, by mixing with graphite.