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An ethyl methyl sulfone co-solvent eliminates macroscopic morphological instabilities of lithium metal anode

Author:
Shin, Woochul, So, Kang Pyo, Stickle, William F., Su, Cong, Lu, Jun, Li, Ju, Ji, Xiulei
Source:
Chemical communications 2019 v.55 no.23 pp. 3387-3389
ISSN:
1364-548X
Subject:
anodes, chemical reactions, electrolytes, lithium
Abstract:
Lithium metal anodes suffer from a short cycle life, and the parasitic reactions of lithium with electrolytes are widely observed. Common sense is to avoid such reactions. Herein, we head in the opposite direction by using an oxidizing co-solvent, ethyl methyl sulfone, in the electrolyte, which addresses the ‘dendrite’ issue entirely, resulting in a dense and macroscopically smooth surface morphology of the plated lithium. However, a dendrite-free lithium metal anode does not necessarily exhibit a high coulombic efficiency.
Agid:
6327374