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Direct electrochemical generation of supercooled sulfur droplets at −28.4 °C. (A) Picture of a sulfur electrochemical cell in dry ice and o-Xylene mixture cooling bath. (B) Temperature at the spot of observation is measured to be −28.4 °C by an infrared thermometer. (C–E) Time-lapse light microscopy images of the formation of sulfur droplets on Au electrode at −28.4 °C.
