Fig. 5. TEM images of the ultrathin Pt nanoplates and the commercial Pt/C catalyst before and after 10 000 cycles of potential sweeps in the ORR. (a) Pristine ultrathin Pt nanoplates supported on carbon black. (b) Ultrathin Pt nanoplates after the cycling process. Inset: HRTEM of a single nanoplate and the corresponding ED pattern. (c) Pristine Pt/C. (d) Pt/C after the cycling process.
