Method For Calculating Battery Capacity Characteristics

Abstract: The present invention relates to a method for calculating battery capacity characteristics, the method including: a negative electrode preparation step for preparing a negative electrode in which graphite and a SiO-based material to be tested are mixed; a charging step for charging a battery including the negative electrode; a data collection step for observing the negative electrode using XRD and thereby collecting time series data for CLi which is the peak value of Li, C6(t) which is the peak value of Li2C12, and C12(t) which is the peak value of LiC12; and a parameter calculation step for calculating parameter K, which is a parameter indicating the battery capacity characteristics, on the basis of the CLi, C6(t), and C12(t) when the time differential value for the C6(t) or the C12(t) is 0, and to a battery in which the value of parameter K is at least 12 times the weight fraction of the SiO-based material in the negative electrode.

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