Fig. 5.

Electrochemical performance of O-Ti₃C₂T_x film electrodes. a Cyclic voltammogram profiles collected in 3 M H₂SO₄ at 5 mV/s scan rate of O-Ti₃C₂T_x film electrodes from products of different cycles (denote as O-Ti₃C₂T_x-1 to O-Ti₃C₂T_x-6). b CV profiles of O-Ti₃C₂T_x-3 at scan rates from 2 mV s⁻¹ to 10 V s⁻¹. c Gravimetric capacitance of O-Ti₃C₂T_x film electrodes at different scan rates d Gravimetric capacitance at scan rate of 2 mV s⁻¹ and rate performance (scan rate at 1000 mV s⁻¹ compared to at 2 mV s⁻¹) of O-Ti₃C₂T_x film electrodes versus different flakes areas. e Capacitance stability of O-Ti₃C₂T_x-3 performed by GCD cycling at 10 A g⁻¹. The insets depict GCD cycling profiles collected at first ten cycles (red) and last ten cycles (blue), respectively. f Electrochemical impedance spectroscopy (EIS) for O-Ti₃C₂T_x film electrodes. The inset shows a magnification of the high-frequency region