fig5

Figure 5. (A) Cycling performances of Li||Li symmetric cells. SEM images of Li metal surface after 100 h of cycling at 0.5 mA·cm^-2 with (B) p(DAH-co-Am-DAH) and (C) p(DAH). XPS spectra and fitting results of (D) C 1s, (E) O 1s, (F) F 1s, and (G) N 1s for p(DAH) and p(DAH-co-Am-DAH) after cycling. SEM: Scanning electron microscopy; DAH: bis[2-(acryloyloxy)ethyl] heptanedioate; Am-DAH: bis[2-(acrylamido)ethyl] heptanedioate; XPS: X-ray photoelectron spectroscopy.