fig13
Figure 13. (A) Schematic illustration of NiCoFe-LDHs materials (left side) and the electrochemical system of HMFOR (right side). XPS spectra of (B) Ni 2p of the as-prepared NiCo-, NiFe-, and NiCoFe-LDHs. XPS spectra of Co 2p region of the as-prepared (C) NiCo-LDHs and (D) NiCoFe-LDHs. LSV curves of (E) OER and (F) HMFOR. Reproduced with permission[110]. Copyright 2020, ACS Catalysis.