fig3
Figure 3. (A and B) Li plating/stripping voltage profiles with different electrolytes at the 15th, 25th and 35th cycles under the conditions of 1 mA cm-2 and 1 mAh cm-2. (C) Polarization voltages at different cycles (0.3 mAh cm-2). (D and E) Morphology of Li deposited on Cu substrate after ten cycles in Li||Cu cells with (D) BE and (E) B-0.5 at 1 mA cm-2. (F-K) XPS spectra for Li||Li symmetric cells after ten cycles with (F-H) BE and (I-K) B-0.5.