Fig. 4: High-resolution XPS spectra of cycled SiO electrodes.

a–c C 1s (a), N 1s (b), and F 1s (c) spectra of a SiO electrode with the elastic GPE. d–f C 1s, (d) N 1s (e), and F 1s (f) spectra of a control SiO electrode.
a–c C 1s (a), N 1s (b), and F 1s (c) spectra of a SiO electrode with the elastic GPE. d–f C 1s, (d) N 1s (e), and F 1s (f) spectra of a control SiO electrode.