Please use this identifier to cite or link to this item: doi:10.22028/D291-29104
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Title: Carbon onion-sulfur hybrid cathodes for lithium-sulfur batteries
Author(s): Choudhury, Soumyadip
Zeiger, Marco
Massuti-Ballester, Pau
Fleischmann, Simon
Formanek, Petr
Borchardt, Lars
Presser, Volker
Language: English
Title: Sustainable energy & fuels : interdisciplinary research for the development of sustainable energy technologies
Volume: 1
Issue: 1
Startpage: 84
Endpage: 94
Publisher/Platform: RSC
Year of Publication: 2017
Publikation type: Journal Article
Abstract: In this study, we explore carbon onions (diameter below 10 nm), for the first time, as a substrate material for lithium sulfur cathodes. We introduce several scalable synthesis routes to fabricate carbon onion–sulfur hybrids by adopting in situ and melt diffusion strategies with sulfur fractions up to 68 mass%. The conducting skeleton of agglomerated carbon onions proved to be responsible for keeping active sulfur always in close vicinity to the conducting matrix. Therefore, the hybrids are found to be efficient cathodes for Li–S batteries, yielding 97–98% Coulombic efficiency over 150 cycles with a slow fading of the specific capacity (ca. 660 mA h g−1 after 150 cycles) in long term cycle test and rate capability experiments.
DOI of the first publication: 10.1039/C6SE00034G
URL of the first publication: https://pubs.rsc.org/en/content/articlelanding/2017/se/c6se00034g#!divAbstract
Link to this record: hdl:20.500.11880/28054
http://dx.doi.org/10.22028/D291-29104
ISSN: 2398-4902
Date of registration: 10-Oct-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Volker Presser
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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