Journal
NANO LETTERS
Volume 16, Issue 6, Pages 3545-3549Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b00577
Keywords
Lithium-sulfur batteries; molecular layer deposition; MLD; high temperature; carbonate based electrolyte; ether based electrolyte
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chair Program (CRC)
- Canada Foundation for Innovation (CFI)
- Ontario Research Fund
- Canada Light Source at University of Saskatchewan (CLS)
- University of Western Ontario
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- NSERC Postdoctoral Fellowship Program
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Lithium-sulfur (Li-S) battery is a promising high energy storage candidate in electric vehicles. However, the commonly employed ether based electrolyte does not enable to realize safe high-temperature Li-S batteries due to the low boiling and flash temperatures. Traditional carbonate based electrolyte obtains safe physical properties at high temperature but does not complete reversible electrochemical reaction for most Li-S batteries. Here we realize safe high temperature Li-S batteries on universal carbon-sulfur electrodes by molecular layer deposited (MLD) alucone coating. Sulfur cathodes with MLD coating complete the reversible electrochemical process in carbonate electrolyte and exhibit a safe and ultrastable cycle life at high temperature, which promise practicable Li-S batteries for electric vehicles and other large-scale energy storage systems.
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