Fig. 6: Nyquist plots of P2-NFMO-LV and P2-NFMO-SV electrodes upon electrochemical cycling.

P2-NFMO-LV at a 4.25 V and b 1.50 V and P2-NFMO-SV electrode at c 4.0 V and d 2.0 V (vs Na⁺/Na) of the 1^st (black square), 2^nd (red point), 3^rd (blue triangle), 4^th (green inverted triangle), and 20^th cycle (magenta hexagon).