Unknown

Dataset Information

0

Direct electrochemical generation of supercooled sulfur microdroplets well below their melting temperature.

ABSTRACT: Supercooled liquid sulfur microdroplets were directly generated from polysulfide electrochemical oxidation on various metal-containing electrodes. The sulfur droplets remain liquid at 155 °C below sulfur's melting point (T m = 115 °C), with fractional supercooling change (T m - T sc)/T m larger than 0.40. In operando light microscopy captured the rapid merging and shape relaxation of sulfur droplets, indicating their liquid nature. Micropatterned electrode and electrochemical current allow precise control of the location and size of supercooled microdroplets, respectively. Using this platform, we initiated and observed the rapid solidification of supercooled sulfur microdroplets upon crystalline sulfur touching, which confirms supercooled sulfur's metastability at room temperature. In addition, the formation of liquid sulfur in electrochemical cell enriches lithium-sulfur-electrolyte phase diagram and potentially may create new opportunities for high-energy Li-S batteries.

SUBMITTER: Liu N 

PROVIDER: S-EPMC6338843 | biostudies-other | 2019 Jan

REPOSITORIES: biostudies-other

Json Xml
altmetric image

Publications

Direct electrochemical generation of supercooled sulfur microdroplets well below their melting temperature.

Liu Nian N   Zhou Guangmin G   Yang Ankun A   Yu Xiaoyun X   Shi Feifei F   Sun Jie J   Zhang Jinsong J   Liu Bofei B   Wu Chun-Lan CL   Tao Xinyong X   Sun Yongming Y   Cui Yi Y   Chu Steven S  

Proceedings of the National Academy of Sciences of the United States of America 20190102 3

Supercooled liquid sulfur microdroplets were directly generated from polysulfide electrochemical oxidation on various metal-containing electrodes. The sulfur droplets remain liquid at 155 °C below sulfur's melting point (<i>T</i><sub>m</sub> = 115 °C), with fractional supercooling change (<i>T</i><sub>m</sub> - <i>T</i><sub>sc</sub>)/<i>T</i><sub>m</sub> larger than 0.40. <i>In operando</i> light microscopy captured the rapid merging and shape relaxation of sulfur droplets, indicating their liqu  ...[more]

Similar Datasets

Unknown How does temperature impact the conformation of single DNA molecules below melting temperature?
| S-EPMC5829751 | biostudies-literature
Unknown Electrotunable liquid sulfur microdroplets.
| S-EPMC6992759 | biostudies-literature
Unknown One-step fabrication of crystalline metal nanostructures by direct nanoimprinting below melting temperatures.
| S-EPMC5379067 | biostudies-literature
Unknown Direct Electrochemical Sensing of Hydrogen Sulfide without Sulfur Poisoning.
| S-EPMC6759990 | biostudies-literature
Unknown Direct electrochemical generation of organic carbonates by dehydrogenative coupling.
| S-EPMC6037012 | biostudies-other
Unknown Persistent Supercooled Drizzle at Temperatures below -25°C Observed at McMurdo Station, Antarctica.
| S-EPMC7477808 | biostudies-literature
Unknown Size-Adjustable Microdroplets Generation Based on Microinjection
| S-EPMC6189902 | biostudies-literature
Unknown Floating ice-algal aggregates below melting arctic sea ice.
| S-EPMC3804104 | biostudies-literature
Unknown Spontaneous generation of hydrogen peroxide from aqueous microdroplets.
| S-EPMC6765303 | biostudies-literature
Unknown The Temperature Effect on the Electrochemical Performance of Sulfur-Doped LiMn2O4 in Li-Ion Cells.
| S-EPMC6955771 | biostudies-literature