Fig. 4: The solvation structure of bulk electrolyte and interphase chemistry on cycled graphite in 1 M NaPF6 DME and 1 M NaPF6 D1M2 systems.
From: Synergistically competitive coordination for tailoring sodium cointercalation potential of graphite
a The most probable solvation structure extracted from MD simulation. b, c Na+ radial distribution function obtained from MD simulation of 1 M NaPF6 DME (b) and 1 M NaPF6 D1M2 (c). d, e The Raman spectra of electrolytes and their components from the region of 725–785 cm−1 (d) and 810–890 cm−1 (e). f 23Na NMR obtained in the coaxial tube with NaCl external calibration. g The X-ray photoelectron spectroscopy (XPS) of cycled graphite in these two systems.
