fig9

Figure 9. (A). Schematic illustration of strain and ligand effect in a core-shell nanostructure; (B) The local density of states projected onto an adsorbate state interacting with the d bands at a surface; (C) Illustration of the effect of tensile strain on the d band center. Reproduced with permission from^[214]. Copyright 2000, Elsevier. (D) STEM/HRTEM image for PtSb nanoparticles after cycling, showing that a PtSb@Pt structure has formed; (E) STEM/HRTEM image for PtSb₂ nanoparticles after cycling, showing that a PtSb₂@Pt structure has formed; (F) the HOR exchange current densities of Pt, PtSb@Pt, and PtSb₂@Pt. Reproduced with permission from^[215]. Copyright 2023, American Chemical Society. (G) Schematic illustration of the preparation of Rh@Pt_x NBs; (H) STEM and corresponding EDS elemental mapping of Rh@Pt_0.83 NBs. Reproduced with permission from^[217]. Copyright 2022, Elsevier. High-resolution ADF-STEM image of RuP@RuP₂/C (I) and the atomic-resolution ADF-STEM image of RuP core (J) and RuP₂ shell (K); (L) Net charge analyses of RuP/RuP₂ and RuP₂; (M) Calculated ΔG_H of RuP/RuP₂, RuP₂, and RuP. Reproduced with permission from^[218]. Copyright 2022, John Wiley and Sons.