RESEARCH / A0179
Phosphate-Modified and Fe-Doped Highly Crystalline β-Ni(OH)2 for Durable Oxygen Evolution at Industrial Current Densities
Read the original paper · 10.1021/acsaem.5c03501 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 4. Ni K-edge XAS analyses. (a) XANES spectra of Ni foil, Ni2O3, Ni(OH)2, FeNi(OH)2, and Pi−FeNi(OH)2. (b) Derived valence states of Ni. (c) k2-weighted Fourier-transformed EXAFS spectra. (d−f) Ni K-edge EXAFS fitting in R space for Ni(OH)2, FeNi(OH)2, and Pi−FeNi(OH)2 (dots: experimental data; lines: fitting; k2-weighted; without phase correction. (g−i) k2-weighted wavelet transform maps of Ni K-edge EXAFS signals for the samples.