fig6
Figure 6. In-situ XANES spectra for ORR catalyzed by CrMnFeCoNi-(CrOx)1/NC at (A) Cr K-edge, (B) Mn K-edge, (C) Fe K-edge, (D) Co K-edge, and (E) Ni K-edge; Corresponding EXAFS spectra in R space (k=2) for (F) Cr K-edge, (G) Mn K-edge, (H) Fe K-edge, (I) Co K-edge, and (J) Ni K-edge; (K) In-situ Raman spectra of ORR catalyzed by CrMnFeCoNi-(CrOx)1/NC. XANES: X-ray absorption near edge structure; ORR: oxygen reduction reaction; EXAFS: extended X-ray absorption fine structure.
