Fig. 2: The evolution of CuSe cathode and interface.
From: In-situ electrochemical activation accelerates the magnesium-ion storage
Schematic illustrations of (a) SIM and (b) ISEA methods. In-situ XRD patterns of CuSe cathode treated with (c) SIM and (e) ISEA methods, with the corresponding discharge-charge curves in (d) and (f), respectively. g STEM-HAADF image and h HRTEM image with elemental maps of Mg, Cl, and F of CuSe cathode after the first cycle of ISEA method. i In-situ Raman spectra of CuSe cathode treated with ISEA method during the second cycle with the corresponding discharge-charge curve in (j). XPS depth profile for (k) C 1 s, (l) F 1 s of CuSe cathode cycled with SIM method, and (m) C 1 s, (n) F 1 s of CuSe cathode cycled with ISEA method. Scale bars: (g) 1 nm, (h) 20 nm.
