Fig. 1
From: Stabilizing polymer electrolytes in high-voltage lithium batteries
Enabling stable electrodeposition of lithium metal. a Schematic showing the possible cleavage sites for diglyme and HFiP molecules such that the uncontrolled polymerization of diglyme is quenched by the CH(CF3)2+ radical. b Voltage profile for the electroplating and stripping of lithium metal at the same current density. The different numbers represent the cycle index. c Scanning electron microscopy image of stainless-steel substrate after lithium deposition for 6 h at a current density of 1 mA cm−2, the scale bar corresponds to 2 μm. d Coulombic efficiency measurements in a Li||stainless steel asymmetric cell at a current density of 1 mA cm−2 and capacity of 1 mAh cm−2. The black circles represent the diglyme–LiNO3 electrolyte with the HFiP additive and red triangles are results for the control/neat electrolyte
