Fig. 3: Atomic structural analysis.

a XANES spectra and b Fourier transform of the Co K-edge of N-HP-Co SACs Co3O4, CoO, and Co foil. c, d The corresponding EXAFS fitting curves of N-HP-Co SACs at the k space and R space, respectively.
a XANES spectra and b Fourier transform of the Co K-edge of N-HP-Co SACs Co3O4, CoO, and Co foil. c, d The corresponding EXAFS fitting curves of N-HP-Co SACs at the k space and R space, respectively.