fig5

Figure 5. (A) Schematic diagram of the synthetic procedure for amorphous porous RuSe₂; (B) HRTEM image of RuSe₂-400 ℃. The inset (B) shows its corresponding FFT pattern. Figure 5A and B is reprinted with permission from^[77]. Copyright 2024, Elsevier; (C) The schematic illustration of MnRuO_x catalyst preparation; (D) HAADF-STEM image of MnRuO_x-300; (E) The O 1s XPS spectra of MnRuO_x-300 and MnRuO_x-500 catalysts; (F) The OER energy profile at an applied potential of 1.23 V. (G) Charge density difference of C/C-MnRuO_x and C/A-MnRuO_x. Figure 5C-G is reprinted with permission from^[78]. Copyright 2024, John Wiley and Sons. HRTEM: High-resolution transmission electron microscopy; XPS: X-ray photoelectron spectroscopy; OER: oxygen evolution reaction; HAADF-STEM: high-angle annular dark-field scanning transmission electron microscopy.