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Performance study of magnesium-sulfur battery using a graphene based sulfur composite cathode electrode and a non-nucleophilic Mg electrolyte

Vinayan, B. P. 1; Zhao-Karger, Z. 2; Diemant, T.; Chakravadhanula, V. S. K. 2,3; Schwarzburger, N. I. 1; Cambaz, M. A. 1; Behm, R. J. 1; Kübel, C. ORCID iD icon 2,3; Fichtner, M. 2
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
3 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Here we report for the first time the development of a Mg rechargeable battery using a graphene–sulfur nanocomposite as the cathode, a Mg–carbon composite as the anode and a non-nucleophilic Mg based complex in tetraglyme solvent as the electrolyte. The graphene–sulfur nanocomposites are prepared through a new pathway by the combination of thermal and chemical precipitation methods. The Mg/S cell delivers a higher reversible capacity (448 mA h g−1), a longer cyclability (236 mA h g−1 at the end of the 50th cycle) and a better rate capability than previously described cells. The dissolution of Mg polysulfides to the anode side was studied by X-ray photoelectron spectroscopy. The use of a graphene–sulfur composite cathode electrode, with the properties of a high surface area, a porous morphology, a very good electronic conductivity and the presence of oxygen functional groups, along with a non-nucleophilic Mg electrolyte gives an improved battery performance.

Volltext §
DOI: 10.5445/IR/1000052570
DOI: 10.1039/c5nr04383b
Zitationen: 240
Web of Science
Zitationen: 226
Zitationen: 242
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 2040-3364, 2040-3372
KITopen-ID: 1000052570
HGF-Programm 37.01.01 (POF III, LK 01) Fundamentals and Materials
Erschienen in Nanoscale
Verlag Royal Society of Chemistry (RSC)
Band 8
Heft 6
Seiten 3296-3306
Projektinformation Hi-C (EU, FP7, 608575)
Bemerkung zur Veröffentlichung RSC geförderter Open Access-Artikel
Nachgewiesen in Dimensions
Web of Science
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