Figure 10.

a,b) Cross‐section SEM images of a) a Ti₃C₂T_x MXene hydrogel film and b) macroporous templated Ti₃C₂T_x. Scale bars, 5 µm. Insets: The ionic current pathways in electrodes with different structures. c) Comparison of ion transport resistance for hydrogel and macroporous electrodes deduced from EIS measurements collected at different applied potentials. Reproduced with permission.[qv: 108] Copyright 2017, Springer Nature. d) Rate performance of the MXH, MX/GN, and MXene film electrodes at current densities ranging from 0.2 to 1000 A g⁻¹. e) Cyclic voltammetry profiles of the MXH, MX/GN, and MXene film electrodes collected at 1000 mV s⁻¹. f) Plots of the anodic (filled symbols) and cathodic (open symbols) peak current against the scan rate for MXH, MX/GN, and MXene films.[qv: 37]