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The Role of the Ani...
The Role of the Anion in Concentrated Electrolytes for Lithium-Sulfur Batteries
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- Kottarathil, Aginmariya, 1998 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Politechnika Warszawska,Warsaw University of Technology,Alistore - European Research Institute
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- Slim, Zaher, 1992 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ahmad Ishfaq, Hafiz, 1995 (författare)
- Kemijski Institut,National Institute of Chemistry Slovenia,Alistore - European Research Institute,Chalmers tekniska högskola,Chalmers University of Technology
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visa fler...
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- Jeschke, Steffen, 1986 (författare)
- Griffith University
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- Zukowska, G. Z. (författare)
- Politechnika Warszawska,Warsaw University of Technology
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- Marczewski, Maciej Jozef, 1981 (författare)
- Politechnika Warszawska,Warsaw University of Technology
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- Lech, Katarzyna (författare)
- Politechnika Warszawska,Warsaw University of Technology
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- Johansson, Patrik, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Alistore - European Research Institute
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- Wieczorek, W (författare)
- Alistore - European Research Institute,Politechnika Warszawska,Warsaw University of Technology
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visa färre...
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Journal of the Electrochemical Society. - 1945-7111 .- 0013-4651. ; 171:7
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Highly concentrated electrolytes show promise in enhancing lithium-sulfur (Li-S) battery performance by mitigating polysulfide (PS) solubility. The role of the salt anion for the performance improvement(s) is however not well understood. Here a systematic characterization using (concentrated) electrolytes based on three different salts: LiTFSI, LiTf, and LiTDI, in a common DOL:DME solvent mixture is reported for a wide range of physicochemical and electrochemical properties: ionic conductivity, density, viscosity, speciation, and PS solubility. While increased salt concentration in general improves Li-S battery performance, the role of the salt anion introduces complexity. The 2 m LiTDI-based electrolyte, with a slightly higher viscosity and lower PS solubility, outperforms the LiTFSI-based counterpart in terms of accessible reversible capacity. Conversely, the 2 m LiTf-based electrolyte exhibits subpar performance due to the formation of ionic aggregates that renders more free solvent and, therefore higher PS solubility, which, however can be improved by using a 5 m concentrated electrolyte. Hence, using electrolyte salt concentration as a rational design route demands an understanding of the local molecular structure, largely determined/affected by the choice of anion, as well as how it connects to the global properties and in the end improved Li-S battery performance.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- highly concentrated electrolytes
- lithium-sulfur batteries
- high-performance liquid chromatography
- COSMO-RS
- role of the anion
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Kottarathil, Agi ...
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Slim, Zaher, 199 ...
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Ahmad Ishfaq, Ha ...
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Jeschke, Steffen ...
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Zukowska, G. Z.
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Marczewski, Maci ...
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Lech, Katarzyna
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Johansson, Patri ...
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Wieczorek, W
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