One molar of LiPF6 dissolved in EC/EMC (3:7 by wt) + 2 wt % VC was used as control electrolyte (BASF). One molar of LiPF6 dissolved in a mixture of EC/EMC + 2 wt % VC was mixed in-house. To build SEB cells, 0.5 to 1.5 wt % TAP were mixed into the conventional electrolyte as additives.