Fig. 2: Analysis of XPS and XAFS spectra.
From: Synergy of single atoms and sulfur vacancies for advanced polysulfide–iodide redox flow battery
a Co 2p XPS spectra of CoSA-VS/MoS2. b, c Mo 3d and S 2p XPS spectra of CoSA-VS/MoS2 and MoS2. d, e XANES spectra extracted from the Co K-edge and the corresponding FT-EXAFS at the R space of CoSA-VS/MoS2 and the reference samples. f FT-EXAFS fitting curve at the R space of CoSA-VS/MoS2 at the Co K-edge (yellow sphere: S atom, red sphere: Co atom, blue sphere: Mo atom). g Wavelet transform contour plots of CoSA-VS/MoS2 and the reference samples.
