EVALUATION METHOD OF CARBON MATERIAL FOR NEGATIVE ELECTRODE AND HIGH EFFICIENCY NEGATIVE ELECTRODE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an evaluation method from which a useful information about initial charging/discharging efficiency is acquired with a simple method. SOLUTION: Amount of average gapsΔx of each layer is acquired from a specific algebraic expression using a crystal lattice constant a0 and c0, and a surface to layer distance d112 obtained from X-ray diffraction of a carbon material.