fig3

Figure 3. (A) Schematic representation of carbon shell-coated FeP NP preparation. TEM images of as-synthesized (B) iron oxide NPs, (C, D) carbon shell-coated FeP NPs and (E) FeP NPs prepared without a carbon shell. Long-term durability test of FeP/C electrocatalysts: (F) polarization curves for 5000 cycle tests of FeP NPs with (left) and without (right) a carbon shell. (G) Plots of overpotential vs. potential cycle. EXAFS analysis of FeP NPs (H) without and (I) with a carbon shell. Reproduced with permission. Copyright 2017, American Chemical Society^[66].