RESEARCH / A0273
Corrosion‐Driven Ni3S4 Gradient in NiFe‐LDH Enables Durable Industrial‐Scale Water Electrolysis
Read the original paper · 10.1002/anie.202516894 ↗
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 2. Electronic structure analysis of NiFe-LDH and Ni3S4/NiFe-LDH. a) XPS image of NiFe-LDH by Ar+ etching of different profiles of Fe 2p. b) Ni K-edge XANES spectra of Ni foil, NiO, NiFe-LDH, and Ni3S4/NiFe-LDH. c) Fe K-edge XANES spectra of Fe foil, Fe2O3, NiFe-LDH, and Ni3S4/NiFe-LDH. d) XPS image of Ni3S4/NiFe-LDH by Ar+ etching of different profiles of Fe 2p. e) Ni K-edge k3-weighted FT-EXAFS spectra at R space. f) Fe K-edge k3-weighted FT-EXAFS spectra at R space. g) XPS image of NiFe-LDH by Ar+ etching of different profiles of Fe 2p. Wavelet transform of k3-weighted EXAFS data for Ni K-edge of h) NiFe-LDH and i) Ni3S4/NiFe-LDH. j) XPS image of Ni3S4/NiFe-LDH by Ar+ etching of different profiles of Ni 2p. Wavelet transform of k3-weighted EXAFS data for Fe K-edge of k) NiFe-LDH and l) Ni3S4/NiFe-LDH.