RESEARCH / A0213
Carbon-supported pyrrolic-nitrogen-rich Ni sites for efficient oxygen evolution reaction
Read the original paper · 10.1016/j.ces.2026.123317 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 2. High-resolution XPS spectra for (a) N 1 s and (b) C 1 s of Ni-NC/EG and NC/EG. (c) High-resolution XPS spectrum for Ni 2p of Ni-NC/EG. (d) Ni K-edge XANES, (e) k2-weighted Fourier-transformed EXAFS spectra, and (f) WT-EXAFS spectra of Ni-NC/EG, NiO, and Ni foil. (g) Aberration-corrected HAADF-STEM image of Ni-NC/EG. (h) Fourier-transformed EXAFS fitting result for Ni-NC/EG. Inset: atomic structure model of Ni-N4 site in Ni-NC/EG. Color legend for atoms: gray, C; blue, N; cyan, Ni.