fig2
From: Electronic modification of NaCrO2via Ni2+ substitution as efficient cathode for sodium-ion batteries
Figure 2. (A) The electron localization function of valence electrons at the slices along the (001) plane of NCO and NCNO-0.05 samples. (B) The Cr 2p XPS spectra of the as-obtained NCO and NCNO-0.05 samples. (C) Ni 2p XPS spectra of NCNO-0.05.
