fig4

Figure 4. Electrochemical performance of surface-terminated Mo₂CT_x (T = F, Cl, Br, I) MXene. (A-D) The CV curves of Mo₂CT_x electrodes at different scan rates; (E-H) The GCD curves of Mo₂CT_x electrodes at different scan rates; (I) Capacitance comparison of the Mo₂CT_x electrode at different scan rates; (J) Capacitance retention at different scan rates; (K) The calculated diffusion and capacitive ratios at different scan rates for Mo₂CI_x; (L) Capacitance comparison of the Mo₂CT_x electrode at different current densities. CV: Cyclic voltammetry; GCD: galvanostatic charge/discharge.