Fig. 6

SEM images of Li anodes, (a) before cycling; (b) after 500 cycles at 5 C in STD electrolyte; (c) after 500 cycles at 5 C in STD + Mg electrolyte; The XPS spectra of Li anodes in STD and STD + Mg electrolytes after 500 cycles at 5 C, (d) P 2p, (e) F 1s, (f) Ni 2p, (g) Mn 2p.