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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 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sadd, Matthew, 1994 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xiong, Shizhao, 1985 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Cavallo, Carmen, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Heo, Jungwon (author)
- Gyeongsang National University
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- Ahn, Jou Hyeon (author)
- Gyeongsang National University
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- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2019-08-19
- 2019
- English.
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In: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 12:18, s. 4176-4184
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Abstract
Subject headings
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- 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.
Subject headings
- 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)
Keyword
- ionic liquids
- electrolytes
- lithium
- sulfur
- batteries
Publication and Content Type
- art (subject category)
- ref (subject category)
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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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show more...
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Matic, Aleksanda ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Organic Chemistr ...
- Articles in the publication
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ChemSusChem
- By the university
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Chalmers University of Technology