Lithium deposition morphology in various electrolyte systems at the current density of 0.1 mA/cm2, 1 mAh/cm2. (A and B) EC/DEC 1 M LiPF6. (C and D) DOL/DME 1 M LiTFSI, 1% LiNO3. (E and F) Sulfur catholyte 5 M S8 dissolved in DOL/DME 1 M LiTFSI, 1% LiNO3. (G and H) TEGDME 1 M LiTFSI with Li2O2 as cathode. (Scale bars: A, C, and G, 5 μm; E, 20 μm; D and F, 2 μm; B and H, 1 µm.)