fig10

Figure 10. (A) High-resolution STEM maps of Pd and Ce of 0.24 CeO_x-Pd/C, 0.38 CeO_x-Pd/C, and 0.59 CeO_x-Pd/C; (B) HOR polarization curves in 0.1 M KOH; (C) Interfacial contact area as a function of the Ce/Pd bulk atomic ratio. Reproduced with permission from^[224]. Copyright 2020, John Wiley and Sons; (D) HRTEM images of Ru@TiO₂; (E) Enlarged view of the interface between Ru and TiO₂; (F) HOR polarization curves of Ru@TiO₂, PtRu/C_com, and Ru/C catalysts in 0.1 M KOH. Reproduced with permission from^[226]. Copyright 2020, Springer Nature; (G and H) HAADF-STEM images of IrWO_x/C, with amorphous WO_x clusters (2,4) decorated on the Ir-W nanocrystallines (1,3); (I) Histograms of HOR mass activities and exchange current densities of IrWO_x/C, Ir/C, and Pt/C. Reproduced with permission from^[233]. Copyright 2020, Elsevier.