METHOD FOR PRECISELY ANALYZING DEGREE OF IMPREGNATION OF ELECTROLYTE OF ELECTRODE IN CELL

The present invention relates to a method for analyzing a degree of impregnation of an electrolyte of an electrode in a battery cell, the method comprising: a battery cell manufacturing step (S) of preparing a battery cell by injecting an electrolyte into a battery cell including an electrode to be evaluated; a step of charging/discharging the battery cell several times and obtaining a capacity-voltage profile for each cycle (S); a step of obtaining a differential capacity (dV/dQ) curve obtained by differentiating the capacitance-voltage profile for each cycle with respect to the capacity (S); and a step of, in the differential capacity curve, determining a cycle at which behavior becomes the same as a time point when impregnation is sufficiently performed (S).