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Designing a Safe El...
Designing a Safe Electrolyte Enabling Long‐Life Li/S Batteries
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- Agostini, Marco, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sadd, Matthew, 1994 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xiong, Shizhao, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Cavallo, Carmen, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Heo, Jungwon (författare)
- Gyeongsang National University
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- Ahn, Jou Hyeon (författare)
- Gyeongsang National University
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- Matic, Aleksandar, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2019-08-19
- 2019
- Engelska.
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 12:18, s. 4176-4184
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Lithium–sulfur (Li/S) batteries suffer from “shuttle” reactions in which soluble polysulfide species continuously migrate to and from the Li metal anode. As a consequence, the loss of active material and reactions at the surface of Li limit the practical applications of Li/S batteries. LiNO3 has been proposed as an electrolyte additive to reduce the shuttle reactions by aiding the formation of a stable solid electrolyte interphase (SEI) at the Li metal, limiting polysulfide shuttling. However, LiNO3 is continuously consumed during cycling, especially at low current rates. Therefore, the Li/S battery cycle life is limited by the LiNO3 concentration in the electrolyte. In this work, an ionic liquid (IL) [N-methyl-(n-butyl)pyrrolidinium bis(trifluoromethylsulfonyl)imide] was used as an additive to enable longer cycle life of Li/S batteries. By tuning the IL concentration, an enhanced stability of the SEI and lower flammability of the solutions were demonstrated, that is, higher safety of the battery. The Li/S cell built with a high sulfur mass loading (4 mg cm−2) and containing the IL-based electrolyte demonstrated a stable capacity of 600 mAh g−1 for more than double the number of cycles of a cell containing LiNO3 additive.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (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)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- ionic liquids
- electrolytes
- lithium
- sulfur
- batteries
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Till lärosätets databas
- Av författaren/redakt...
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Agostini, Marco, ...
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Sadd, Matthew, 1 ...
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Xiong, Shizhao, ...
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Cavallo, Carmen, ...
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Heo, Jungwon
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Ahn, Jou Hyeon
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Matic, Aleksanda ...
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Fysikalisk kemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Annan fysik
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Annan kemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Organisk kemi
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ChemSusChem
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Chalmers tekniska högskola