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Dual Functional Hig...
Dual Functional High Donor Electrolytes for Lithium-Sulfur Batteries under Lithium Nitrate Free and Lean Electrolyte Conditions
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- Elabd, Ahmed (författare)
- Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland.
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- Kim, Jiheon (författare)
- Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea.;Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea.
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- Sethio, Daniel (författare)
- Uppsala universitet,Organisk kemi
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- Kang, Sangho (författare)
- Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea.;Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea.
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- Kang, Taemin (författare)
- Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea.;Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea.
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- Choi, Jang Wook (författare)
- Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea.;Sch Chem & Biol Engn, Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea.
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- Coskun, Ali (författare)
- Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland.
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Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea.;Seoul Natl Univ, Inst Chem Proc, Seoul 08826, South Korea. (creator_code:org_t)
- 2022-07-07
- 2022
- Engelska.
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Ingår i: ACS Energy Letters. - : American Chemical Society (ACS). - 2380-8195. ; 7:8, s. 2459-2468
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Electrolyte engineering is a highly promising strategy in lithium-sulfur batteries to increase the sulfur utilization and maintain a stable interface at the lithium metal anode for long-term cycling. Whereas high donor electrolytes can increase the solubility of polysulfides to promote the sulfur utilization and therefore operate under lean electrolyte conditions, their poor thermodynamic stability toward lithium metal anode causes uncontrolled decomposition at its interface and impair the cycle life severely. Here, we introduce a dual functional high donor electrolyte, 3-fluoropyridine (3-FPN), to simultaneously achieve high polysulfide solubility up to 1.5 M and compatibility with lithium metal. These features result in a high specific capacity of 1087.9 mAh g(sulfur)(-1) and robust cycling under a lean electrolyte condition of 7 mu Lelectrolyte mgsulfur-1in the absence of LiNO3. Remarkably, 3-FPN preserves stable cyclability even at a high areal sulfur loading of 8 mgsulfur cm-2, which opens a new avenue in advancing the electrolytes for lithium-sulfur batteries toward their high volumetric energy density and long cycle life.
Ämnesord
- 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)
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