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. Author manuscript; available in PMC: 2019 Jan 16.
Published in final edited form as: Nat Mater. 2018 Jul 16;17(9):827–833. doi: 10.1038/s41563-018-0133-2

Figure 6. Structural and ORR activity changes under simulated PEMFC cathode environment.

Figure 6

a) STEM images of the Sponge, PtNi/C, b) specific activity c) mass activity, d) lattice parameter and e) SD descriptor of Sponge and Octahedron PtNi/C, and f) STEM images of the Octahedron PtNi/C after various potential cycling stages. The y-axis error bars are the same as those defined in Fig. 4.