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A flexible and free...
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Haridas, Anupriya K.Gyeongsang National University
(författare)
A flexible and free-standing FeS/sulfurized polyacrylonitrile hybrid anode material for high-rate sodium-ion storage
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
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LIBRIS-ID:oai:research.chalmers.se:17ccdd4b-4b8a-40d2-9194-67830c554694
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https://research.chalmers.se/publication/514476URI
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https://doi.org/10.1016/j.cej.2019.123453DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
Anmärkningar
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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.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Heo, J. W.Gyeongsang National University
(författare)
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Li, XueyingGyeongsang National University
(författare)
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Ahn, H. J.Gyeongsang National University
(författare)
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Zhao, XiaohuiSoochow University
(författare)
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Deng, ZhaoSoochow University
(författare)
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Agostini, Marco,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)agostini
(författare)
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Matic, Aleksandar,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matic
(författare)
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Ahn, J.Gyeongsang National University
(författare)
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Gyeongsang National UniversitySoochow University
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Chemical Engineering Journal: Elsevier BV385:1 April1385-8947
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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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visa fler...
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Agostini, Marco, ...
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Matic, Aleksanda ...
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Ahn, J.
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