RESEARCH / A0016
Engineering desert sand into self‑standing electrodes via endogenous Fe‑catalyzed in‑situ growth of N‑doped carbon nanotubes for high‑performance supercapacitors
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. 5 (a) Fe K-edge XANES and (b) FT-EXAFS spectra of Fe foil, Fe3O4, DS, and Fe3C@NCNTs/DS. Wavelet transform (WT) plots of (c) Fe foil, (d) Fe3O4, (e) DS, and (f) Fe3C@NCNTs/DS.