fig3

Figure 3. (A) Schematic for the synthesis of NF@NiFe-LDH-1.5-4; (B) The digital photographs and SEM images for different materials under various solutions; (C) The possible formation mechanism of NF@NiFe-LDH-1.5-4; (D) Chronopotentiometric curve at 200 mA·cm^-2 for the NF@NiFe-LDH-1.5-4 || NF@NiFe-LDH-1.5-4 electrolytic cell. Reproduced with permission^[43]. Copyright 2022 Wiley-VCH. NF: Nickel foam; LDH: layered double hydroxide; SEM: scanning electron microscope.