@article{ref1,
title="Intrinsic flame-retardant organic electrolyte for safe lithium-sulfur batteries",
journal="Angewandte Chemie (International ed. in English)",
year="2019",
author="Yang, Huijun and Guo, Cheng and Chen, Jiahang and Naveed, Ahmad and Yang, Jun and NuLi, Yanna and Wang, Jiulin",
volume="58",
number="3",
pages="791-795",
abstract="Safety concern poses a significant challenge for the large-scale employment of lithium-sulfur batteries. Extreme flammable conventional electrolyte and dendritic lithium deposition cause severe safety issues. Herein, we report an intrinsic flame-retardant (IFR) electrolyte consisting of 1.1 M lithium bis(fluorosulfonyl)imide in a solvent mixture of flame-retardant triethyl phosphate and high flash point solvent 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl (1:3, v/v) for safe lithium-sulfur (Li-S) batteries. This electrolyte exhibits favorable flame-retardant property and high reversibility of lithium metal anode (Coulombic efficiency >99%). Importantly, this IFR electrolyte enables stable lithium plating/stripping behavior with micro-sized and dense-packing lithium deposition at high temperatures. When coupled with sulfurized pyrolyzed poly(acrylonitrile) cathode (sulfur content: 52.6 wt%), Li-S batteries deliver high composite capacity (840.1 mAh g-1) and high sulfur utilization of 95.6%. More advantages of this system are its enhanced energy conversion efficiency and energy density under high temperature operation.<br><br>© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.<p /> <p>Language: en</p>",
language="en",
issn="1433-7851",
doi="10.1002/anie.201811291",
url="http://dx.doi.org/10.1002/anie.201811291"
}