fig15

Figure 15. (A) The calculated Gibbs free energy of OH-H and H adsorption for the Ni₃N, CrO_x, and CrO_x-Ni₃N. (B) The total PDOSs of the Ni₃N and CrO_x-Ni₃N. (C and D) TEM characterizations of CrO_x-Ni₃N. (Reproduced with permission^[123]. Copyright 2022, Wiley-VCH). (E) Schematic illustration of the overall water splitting process. Amorphous CFOH/COH catalyst exhibits much better performances than other as-synthesized A-F or A-C catalysts. (Reproduced with permission^[124]. Copyright 2020, Elsevier). (F and G)TEM and HRTEM of NFSe@NFOH/NF. (I and J) Corresponding FFT patterns of the selected regions marked by purple and pink squares, respectively. (H) Lattice spacing corresponds to the selected white region. (Reproduced with permission^[125]. Copyright 2023, Elsevier).