fig6

Figure 6. (A) A typical MOF structure, where metal ions and organic ligands form a regular two-dimensional framework; (B) Rich active sites on MOFs; (C) MOF modified separators regulate the electric field and guide the ion flux; (D) MOF modified separator guides the uniform metal deposition and avoids dendrite formation; Representative synthesis process of (E) UIO-66; (F) MIP-202 and (G) MIL-125 (Ti). (A and G) are quoted with permission from Liu et al.^[149]; (B) from Lu et al.^[152]; (C) from Fu et al.^[153]; (D) from Wang et al.^[154]; (E) from Lei et al.^[144]; and (F) from Zhou et al.^[166]. MOF: Metal-organic frameworks.