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Monitoring Polysulf...
Monitoring Polysulfide Solubility and Diffusion in Fluorinated Ether-Based Electrolytes by Operando Raman Spectroscopy
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- Bouchal, Roza, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Boulaoued, Athmane, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Patrik, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2020-01-29
- 2020
- Engelska.
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Ingår i: Batteries and Supercaps. - : Wiley. - 2566-6223. ; 3:5, s. 397-401
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Polysulfide (PS) solubility is a key property of Li-S battery electrolytes for the conversion reaction(s) at the electrolyte-electrode interface. When PSs shuttle between the composite C/S cathode and the lithium metal anode, however, this leads to a continuous loss of active material and thus rapid capacity fading. In order to restrict the shuttle effect, fluorinated ethers have recently been proposed as a remedy; by only sparsely dissolving PSs they physically block the diffusion. We show here how the diffusion of PSs in fluorinated ethers, as monitored by operando Raman spectroscopy, is selective and that only short-chain PS (S42-) are soluble and diffuse. This fundamental observation can be used to further leverage the practical performance of Li-S batteries by novel electrolyte design.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- operando Raman spectroscopy
- Li-S batteries
- diffusion
- polysulfides
- fluorinated ethers
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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