fig2
From: Fe single-atom-regulated carbon nanofibers for high-performance lithium/sodium ion battery anode
Figure 2. Structural characterizations of the N-C and Fe-N-C. XRD pattern (A); Raman spectrum (B) and XPS survey scan (C) of the N-C and Fe-N-C; (D) High-resolution C 1s spectrum; (E) high-resolution N 1s spectrum and (F) high-resolution Fe 2p spectrum for Fe-N-C-2. XRD: X-ray diffraction; XPS: X-ray photoelectron spectroscopy.
