fig13
![Research progress of amorphous catalysts in the field of electrocatalysis](https://image.oaes.cc/94ae854a-00e1-4b70-b63a-b92d0449616c/microstructures3066.fig.13.jpg)
Figure 13. (A) XRD patterns of the FNPBO products with different ratios of Fe to Ni. (B) LSV curves of different samples. (Reproduced with permission[119]. Copyright 2019, American Chemical Society). (C) The synthesis of systematic amorphous NiWO4 and Fe-doped amorphous NiWO4. (D) HRTEM and (E) SAED of NiWO4. (F) HRTEM and (G) SAED of Fe-doped NiWO4. (H) Possible crystal field study of NiWO4 with or without Fe3+ doping. (I) Backward LSV curve of NiWO4, Fe-doped NiWO4, annealed NiWO4, and annealed Fe-doped NiWO4 at a scan rate of 5 mV/s in 1 M KOH. (Reproduced with permission[120]. Copyright 2023, American Chemical Society). (J) XRD patterns of the prepared catalysts. (K) N2 adsorption-desorption isotherm and pore-size distribution (inset) of the MNC. (L) OER polarization curves without iR-compensation. (M) Tafel slopes. (N) The elementary steps for the OER process catalyzed by various catalysts. (Reproduced with permission[121]. Copyright 2018, WILEY-VCH).