Electrochemical Properties and Ex Situ Study of Sodium Intercalation Cathode P2/P3-NaNi_1/3Mn_1/3Co_1/3O₂

Figure 8

Nyquist plot of NaNMC cathode batteries in charging (a) and discharging (b). The evolution of semicircle resistances Rs, R1, and R2 in charging (c) and discharging (d).

(a)

(b)

(c)

(d)