fig3

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