Figure 5
The four panels are labelled a, b, c, and d. Panel a shows intensity versus 2 theta from 20 to 90 degrees for L i C l K C l N i 600 and L i C l K C l L i N i 600, with multiple sharp peaks and reference markers for K C l P D F 75 minus 0296 and L i C l P D F 04 minus 0664. Panel b shows absorption coefficient versus photon energy from 8330 to 8390 electron volt for N i foil, N i C l 2, N i O, and L i C l K C l N i 600, with curves rising to peaks near mid-range and then decreasing. Panel c shows k cubed chi of k versus k from 0 to 12 per angstrom cubed for N i O, L i C l K C l N i 600, and N i C l 2, with oscillatory patterns of varying amplitude. Panel d shows F T magnitude versus R from 0 to 6 angstrom for the same three samples, with peaks at different positions and heights.(a) XRD patterns of LiCl-KCl-Li-Ni_600 and LiCl-KCl-Ni_600; (b) The Ni K-edge XANES spectra of Ni foil, NiCl2, NiO and LiCl-KCl-Ni_600; (c) The Ni K-edge k3-weighted EXAFS oscillations for NiCl2, NiO and LiCl-KCl-Ni_600; (d) Fourier transform of k3-weighted EXAFS data for NiCl2, NiO and LiCl-KCl-Ni_600