Carbon-coated core-shell Li2S@C nanocomposites as high performance cathode material for Lithium-Sulfur batteries

C. Chen, D. Li, L. Gao, P.P.R.M.L. Harks, Rüdiger A. Eichel, P.H.L. Notten

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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Samenvatting

Li2S has made the concept of Li-S batteries much more promising due to the relatively high storage capacity, the possibility of using Li-free anodes and the increase of microstructural stability. However, similar to S, Li2S also suffers from the insulating nature and polysulfides dissolution problem. The results presented here show a facile and cost-effective approach by using a plasma sparking and chemical S sulfurization process to synthesize core-shell Li2S@C nanocomposites. The nanocomposites show a significantly reduced particle size and well-developed core-shell architecture, effectively shortening the Li-ion diffusion distance, enhancing the electronic conductivity and suppressing the dissolution losses of polysulfides. As a result, a much improved rate and cycling performance has been achieved. The method presented in this study offers good opportunities for scaling up the production of high performance cathode materials in a simple and low-cost way to be applied in future generations Li-S batteries.
Originele taal-2Engels
Pagina's (van-tot)1428-1433
Aantal pagina's6
TijdschriftJournal of Materials Chemistry A
Volume5
Nummer van het tijdschrift4
DOI's
StatusGepubliceerd - 2017

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