Fig. 4: Li metal reversibility and deposition morphology.
From: Rational electrolyte solvent screening for high-energy lithium metal batteries at low temperatures
a Modified Aurbach measurement and b cycling test of Li | |Cu cells at 30 °C with a current density of 1.0 mA cm−2 for 1.0 mAh cm−2. Modified Aurbach measurement of Li | |Cu cells at c −40 °C with a current density of 1.0 mA cm−2 for 1.0 mAh cm−2 and d −60 °C with a current density of 0.1 mA cm−2 for 0.1 mAh cm−2. SEM images and corresponding optical photographs of Cu foils using different electrolytes after plating e 5.0 mAh cm−2 of Li metal at −40 °C (Scale bar = 10 μm) and f 2.0 mAh cm−2 of Li metal at −60 °C (Scale bar = 5 μm). Source data are provided as a Source Data file.
