METHOD FOR PRODUCING SPHEROIDIZED GRAPHITE PARTICLE, SPHEROIDIZED GRAPHITE PARTICLE-CONTAINING ANODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY INCLUDING ANODE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a new spheroidized graphite particle, in which a complicated step is not required and a special device is not required.SOLUTION: The method for producing the spheroidized graphite particle comprises a spheroidization step of spheroidizing a flaky graphite particle. The spheroidization step is carried out by using a spheroidization device comprising a cylindrical tube and an element. The element is a twisted element formed by twisting a flat sheet around the central axis thereof in the longitudinal direction by 180 degrees. A plurality of the twisted elements are packed in the longitudinal direction of the cylindrical tube.