fig5

Figure 5. (A) Illustration of hydrophilicity and structural stability’s improvement of alk-V₂CT_x. (B) XRD patterns of V₂AlC, V₂CT_x, and alk-V₂CT_x. (C) Comparison of hydrophilicity between V₂CT_x and alk-V₂CT_x. This figure is quoted with permission from Chen et al. Copyright (2023) John Wiley and Sons^[34]. (D) SEM image of Ti₃C₂Br₂. (E) HAADF-STEM image and EDS mappings of Ti₃C₂Br₂. (F) Charge and discharge curves of halogenated Ti₃C₂ MXenes at 0.5 A g^-1. This figure is quoted with permission from Li et al. Copyright (2021) American Chemical Society^[61]. (G) Schematic illustration of V₂CT_x cathodes at different voltages by in-situ electrochemical activation. (H and I) SEM images of V₂CT_x cathodes after electrochemical activation at 1.8 V and 2.0 V. This figure is quoted with permission from Liu et al. Copyright (2020) John Wiley and Sons^[62].