METHOD FOR MANUFACTURING NEGATIVE ELECTRODE MIXTURE-CONTAINING COMPOSITION, LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE, LITHIUM SECONDARY BATTERY, AND MATERIAL FOR NEGATIVE ELECTRODE MIXTURE-CONTAINING COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a negative electrode mixture-containing composition which can enhance the dispersibility of constituents, a lithium secondary battery negative electrode and a lithium secondary battery which are arranged by use of the negative electrode mixture-containing composition, and a material for forming the negative electrode mixture-containing composition.SOLUTION: A manufacturing method according to the present invention is a method for manufacturing a negative electrode mixture-containing composition which is used to manufacture a negative electrode of a lithium secondary battery. The method comprises: the step (1) of mixing up a complex of a material including Si and O as constituent elements (in which the atomic ratio x of O to Si meets the condition, 0.5≤x≤1.5) and a carbon material, and a liquid solution or fluid dispersion which contains a polymer compound; the step (2) of mixing up a mixture obtained in the step (1), graphite, and a liquid solution or fluid dispersion which contains a polymer compound; and the step (3) of mixing up a mixture obtained in the step (2), and a liquid solution or fluid dispersion which contains a binding agent.