fig3

Figure 3. (A) TEM, enlarged TEM, and HRTEM images for α-Ni(OH)₂ hollow spheres, respectively. Inset in (C) shows the corresponding SAED pattern. TEM, enlarged TEM, and HRTEM images for β-Ni(OH)₂ nanoplates, respectively. Inset in (F) shows the corresponding SAED pattern. Copyright 2014, American Chemical Society^[49]. (B) Impact of facets on the OER activity descriptor. Inset, e_g occupancy of six- and seven-coordinated configurations. Reproduced with permission. Copyright 2018, Wiley-VCH^[53]. (C) Synthesis schematic of AuSA-MnFeCoNiCu LDH. (D) EDS elemental mapping of Mn, Fe, Co, Ni, Cu, O, Au. The scale bar is 1 μm (E) Projected density of states (EF: Fermi level, εO-2p: O 2p band center) (F) Schematic band diagrams. (G) Computed free energies (ΔG) of OER steps on Au_SA-MnFeCoNiCuOOH and MnFeCoNiCuOOH. Copyright 2023, The Authors, published by Springer Nature^[63]. UHB: Upper Hubbard band; LHB: lower Hubbard band; N(e): state density.