fig7

Figure 7. (A) Schematic illustration of the α-Ti3C2 Mxene nanoribbon framework and d-Ti3C2 Mxene nanosheet. This figure is quoted with permission from Shi et al.[100]. (B) Scheme of the fabrication process of the 3D Mxene-MF for the alkali-metal anode. This figure is quoted with permission from Shi et al.[101]. (C) Illustration for the preparation of the DN-Mxene/CNT scaffold and K@DN-Mxene/CNT metallic anodes; the Coulombic efficiencies of K plating/stripping on different scaffolds at 0.5 mA cm-2 in KPF6-based electrolyte; voltage profiles of symmetric cells with K@DN-Mxene/CNT, K@CNT, or bare K metal anodes at 0.5 mA cm-2; rate performances of three symmetric cells at different current densities. This figure is quoted with permission from Tang et al.[102]