The synergetic effect of lithium polysulfide and lithium nitrate to prevent lithium dendrite growth
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Li-2015-Synergetic effect.pdf
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Author(s)
Li, Weiyang
Yao, Hongbin
Yan, Kai
Zheng, Guangyuan
Liang, Zheng
Chiang, Yet-Ming
Cui, Yi
Date Issued
June 2015
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Li, Weiyang, Hongbin Yao, Kai Yan, Guangyuan Zheng, Zheng Liang, Yet-Ming Chiang, and Yi Cui. “The Synergetic Effect of Lithium Polysulfide and Lithium Nitrate to Prevent Lithium Dendrite Growth.” Nat Comms 6 (June 17, 2015): 7436. doi:10.1038/ncomms8436.
Version
Final published version
Abstract
Lithium metal has shown great promise as an anode material for high-energy storage systems, owing to its high theoretical specific capacity and low negative electrochemical potential. Unfortunately, uncontrolled dendritic and mossy lithium growth, as well as electrolyte decomposition inherent in lithium metal-based batteries, cause safety issues and low Coulombic efficiency. Here we demonstrate that the growth of lithium dendrites can be suppressed by exploiting the reaction between lithium and lithium polysulfide, which has long been considered as a critical flaw in lithium–sulfur batteries. We show that a stable and uniform solid electrolyte interphase layer is formed due to a synergetic effect of both lithium polysulfide and lithium nitrate as additives in ether-based electrolyte, preventing dendrite growth and minimizing electrolyte decomposition. Our findings allow for re-evaluation of the reactions regarding lithium polysulfide, lithium nitrate and lithium metal, and provide insights into solving the problems associated with lithium metal anodes.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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DOI of Published Version
https://doi.org/10.1038/ncomms8436
