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doi:10.22028/D291-29129
Title: | Carbon onion/sulfur hybrid cathodes via inverse vulcanization for lithium–sulfur batteries |
Author(s): | Choudhury, Soumyadip Srimuk, Pattarachai Raju, Kumar Tolosa, Aura Fleischmann, Simon Zeiger, Marco Ozoemena, Kenneth I. Borchardt, Lars Presser, Volker |
Language: | English |
Title: | Sustainable energy & fuels : interdisciplinary research for the development of sustainable energy technologies |
Volume: | 2 |
Issue: | 1 |
Startpage: | 133 |
Endpage: | 146 |
Publisher/Platform: | RSC |
Year of Publication: | 2018 |
Publikation type: | Journal Article |
Abstract: | A sulfur–1,3-diisopropenylbenzene copolymer was synthesized by ring-opening radical polymerization and hybridized with carbon onions at different loading levels. The carbon onion mixing was assisted by shear in a two-roll mill to capitalize on the softened state of the copolymer. The sulfur copolymer and the hybrids were thoroughly characterized in structure and chemical composition, and finally tested by electrochemical benchmarking. An enhancement of specific capacity was observed over 140 cycles at higher content of carbon onions in the hybrid electrodes. The copolymer hybrids demonstrate a maximum initial specific capacity of 1150 mA h gsulfur−1 (850 mA h gelectrode−1) and a low decay of capacity to reach 790 mA h gsulfur−1 (585 mA h gelectrode−1) after 140 charge/discharge cycles. All carbon onion/sulfur copolymer hybrid electrodes yielded high chemical stability, stable electrochemical performance superior to conventional melt-infiltrated reference samples having similar sulfur and carbon onion content. The amount of carbon onions embedded in the sulfur copolymer has a strong influence on the specific capacity, as they effectively stabilize the sulfur copolymer and sterically hinder the recombination of sulfur species to the S8 configuration. |
DOI of the first publication: | 10.1039/C7SE00452D |
URL of the first publication: | https://pubs.rsc.org/en/content/articlelanding/2018/se/c7se00452d#!divAbstract |
Link to this record: | hdl:20.500.11880/28050 http://dx.doi.org/10.22028/D291-29129 |
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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