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Fluorinated Ether B...
Fluorinated Ether Based Electrolyte for High-Energy Lithium-Sulfur Batteries: Li+ Solvation Role behind Reduced Polysulfide Solubility
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- Drvarič Talian, Sara (författare)
- Kemijski Institut,National Institute of Chemistry Slovenia,Univerza V Ljubljani,University of Ljubljana
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- Jeschke, Steffen, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Vizintin, Alen (författare)
- Kemijski Institut,National Institute of Chemistry Slovenia
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- Pirnat, Klemen (författare)
- Kemijski Institut,National Institute of Chemistry Slovenia
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- Iztok, Arcˇon (författare)
- Institut Jožef Stefan,Jozef Stefan Institute,University of Nova Gorica
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- Aquilanti, Giuliana (författare)
- Elettra Sincrotrone Trieste Scpa
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- Johansson, Patrik, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dominko, R. (författare)
- Kemijski Institut,National Institute of Chemistry Slovenia,Alistore - European Research Institute,Univerza V Ljubljani,University of Ljubljana
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(creator_code:org_t)
- 2017-11-29
- 2017
- Engelska.
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Ingår i: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 29:23, s. 10037-10044
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https://pubs.acs.org...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- By employing new electrolytes, the polysulfide shuttle phenomenon, one of the main problems of lithium-sulfur (Li-S) batteries, can be significantly reduced. Here we present excellent Coulombic efficiencies as well as adequate performance of high-energy Li-S cells by the use of a fluorinated ether (TFEE) based electrolyte at low electrolyte loading. The observed altered discharge profile was investigated both by electrochemical experiments and an especially tailored COSMO-RS computational approach, while the details of the discharge mechanism were elucidated by two operando techniques: XANES and UV-vis spectroscopy. A significant decrease of polysulfide solubility compared to tetraglyme is due to different Li+ solvation mode.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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