Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Lower-magnification TEM image, size distribution, and statistical results of the Pd6Ni icosahedra.
  • Fig. S2. HRTEM images, corresponding FFT images, and geometrical models of Pd6Ni icosahedra oriented along three typical projections.
  • Fig. S3. SEM-EDX and ICP-AES results of Pd3Ni icosahedra, Pd4Ni icosahedra, and Pd8Ni icosahedra.
  • Fig. S4. XRD patterns of Pd3Ni icosahedra, Pd4Ni icosahedra, and Pd8Ni icosahedra.
  • Fig. S5. HRTEM images of Pd3Ni icosahedra, Pd4Ni icosahedra, and Pd8Ni icosahedra.
  • Fig. S6. XPS spectra of Pd 3d and Ni 2p for PdxNi/C.
  • Fig. S7. TEM images of products under the typical condition but varying the amounts of Ni(HCO2)2·2H2O.
  • Fig. S8. TEM images of products under the typical condition but varying the amounts of AA.
  • Fig. S9. TEM images of products under the typical condition but changing the Ni(HCO2)2·2H2O to Ni(acac)2 and NiAc2.
  • Fig. S10. TEM images, SEM-EDX results, and PXRD patterns of Pd-Ni icosahedron intermediates.
  • Fig. S11. TEM images of Pd3Ni/C, Pd4Ni/C, Pd6Ni/C, and Pd8Ni/C.
  • Fig. S12. TEM images of the commercial Pd/C.
  • Fig. S13. CV curves of Pd-Ni/C, the commercial Pd/C, and the commercial Pt/C.
  • Fig. S14. TEM images and HRTEM images of Pd6Ni/C-400°C and Pd6Ni/C-500°C.
  • Fig. S15. ORR polarization curves for the commercial Pt/C, Pd6Ni/C, Pd6Ni/C-400°C, and Pd6Ni/C-500°C at different rotation rates.
  • Fig. S16. TEM images of the commercial Pt/C before and after ORR durability tests.
  • Fig. S17. TEM images and SEM-EDS patterns of Pd6Ni/C, Pd6Ni/C-400°C, and Pd6Ni/C-500°C after ORR durability tests.
  • Fig. S18. Detailed characterizations of Pd6Ni/C after ORR durability test.
  • Fig. S19. XPS spectra of Pd 3d and Ni 2p for the Pd6Ni/C before and after durability test.
  • Fig. S20. Surface valence bands of PdxNi/C.
  • Fig. S21. TEM images, image of ~50 ml of Pd6Ni icosahedra colloidal solution, and statistical results of Pd6Ni icosahedra.
  • Table S1. ORR performance of icosahedral Pd6Ni/C NCs and state-of-the-art Pd-based NCs from recently published work.
  • Table S2. ORR performance of icosahedral Pd6Ni/C NCs and state-of-the-art nonprecious metal catalysts from recently published work.
  • Table S3. The relative energy of Ni-doped Pd (111) surface and the adsorption energy of oxygen atom on the Ni-doped Pd (111) surface.
  • References (3854)

Download PDF

Files in this Data Supplement: