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A flexible and free...
A flexible and free-standing FeS/sulfurized polyacrylonitrile hybrid anode material for high-rate sodium-ion storage
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- Haridas, Anupriya K. (author)
- Gyeongsang National University
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- Heo, J. W. (author)
- Gyeongsang National University
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- Li, Xueying (author)
- Gyeongsang National University
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- Ahn, H. J. (author)
- Gyeongsang National University
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- Zhao, Xiaohui (author)
- Soochow University
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- Deng, Zhao (author)
- Soochow University
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- Agostini, Marco, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Matic, Aleksandar, 1968 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ahn, J. (author)
- Gyeongsang National University
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
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In: Chemical Engineering Journal. - : Elsevier BV. - 1385-8947. ; 385:1 April
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https://doi.org/10.1...
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Abstract
Subject headings
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- Sodium-ion based energy storage systems have attracted extensive attention due to the similarities in the mechanism of operation with lithium-ion batteries along with the additional benefit of low cost and high abundance of sodium resources. Iron sulfide-based electrodes that operate via conversion mechanism have shown ample potential for high energy sodium-ion storage. However, the problems related with tremendous volume changes and the dissolution of sodium polysulfides in the electrolyte deteriorate the cycle life and limit their application in sodium-ion batteries (SIBs). Herein, a hybrid anode material, FeS/SPAN-HNF, with iron sulfide (FeS) nanoparticles decorated in a sulfurized polyacrylonitrile (SPAN) fiber matrix is demonstrated as flexible and free-standing anode material for high-rate SIBs. Unlike previous strategies in which FeS is encapsulated in an electrochemically inactive carbon matrix, this study utilizes SPAN, an electrochemically active material, as a dual functional matrix that can efficiently buffer volume expansion and sulfur dissolution of FeS nanoparticles as well as provide significant capacity improvement. The as-designed electrode is self-standing and flexible, without current collectors, binders or additional conductive agents, thus rendering enhanced practical capacity and energy density. This electrode showed a high reversible capacity of 782.8 mAh g−1 at 200 mA g−1 with excellent high rate capability, maintaining 327.5 mAh g−1 after 500 cycles at 5 A g−1, emphasizing promising prospects for the development of flexible and high energy density SIBs.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- Self-supporting electrode
- Hybrid anode material
- Sulfurized polyacrylonitrile
- Iron monosulfide
- High energy density
Publication and Content Type
- art (subject category)
- ref (subject category)
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Haridas, Anupriy ...
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Heo, J. W.
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Li, Xueying
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Ahn, H. J.
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Zhao, Xiaohui
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Deng, Zhao
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show more...
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Agostini, Marco, ...
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Matic, Aleksanda ...
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Ahn, J.
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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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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Chemical Enginee ...
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Chalmers University of Technology