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Impedance spectra of NCM85 undoped and Mo-doped electrodes measured during charging at 4.0 V, 30 °C in three-electrode pouch-type cells with the Li-reference electrodes (as described in the text). Symbols are experimental points and solid lines are fitted data: (a) full scale spectra and (b) an enlarged view of the high-to-medium frequency regions of the spectra marked with the rose color rectangles. (c) An equivalent circuit model of the impedance of NCM85 electrodes.
