A comparative study of sulfur composites using carbon of various natures, namely, graphite, mesocarbon microbeads, and multi-walled carbon nanotubes, is performed in lithium battery design and evaluation. Morphological and structural analyses, by means of SEM and XRD, cyclic voltammetry and galvanostatic cycling in lithium cells are employed for characterization of the materials. Tetraethylene glycol dimethyl ether containing lithium trifluoromethansulfonate is considered the preferred electrolyte for performing the electrochemical tests. Prior to use in cells, the electrolyte characteristics in terms of 1H, 7Li, and 19F nuclei self-diffusion coefficients, ionic conductivity, and ionic association degree are studied by combining NMR and impedance spectroscopy. The best lithium–sulfur composite reported herein achieves a capacity higher than 500 mAh g−1 over 140 cycles with no sign of dendrite formation or failure. This performance is considered sufficiently suitable for the development of high-energy lithium batteries, in particular, considering the expected safety of the cells by employing a nonflammable glyme electrolyte instead of a conventional carbonate-based one. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Carbon composites for a high-energy lithium–sulfur battey with a glyme-based electrolyte / CARBONE, LORENZO; Peng, Jing; AGOSTINI, MARCO; Gobet, Mallory; Devany, Matthew; SCROSATI, Bruno; Greenbaum, Steve; HASSOUN, JUSEF. - In: CHEMELECTROCHEM. - ISSN 2196-0216. - STAMPA. - 4:1(2017), pp. 209-215. [10.1002/celc.201600586]

Carbon composites for a high-energy lithium–sulfur battey with a glyme-based electrolyte

CARBONE, LORENZO;AGOSTINI, MARCO;SCROSATI, Bruno;HASSOUN, JUSEF
2017

Abstract

A comparative study of sulfur composites using carbon of various natures, namely, graphite, mesocarbon microbeads, and multi-walled carbon nanotubes, is performed in lithium battery design and evaluation. Morphological and structural analyses, by means of SEM and XRD, cyclic voltammetry and galvanostatic cycling in lithium cells are employed for characterization of the materials. Tetraethylene glycol dimethyl ether containing lithium trifluoromethansulfonate is considered the preferred electrolyte for performing the electrochemical tests. Prior to use in cells, the electrolyte characteristics in terms of 1H, 7Li, and 19F nuclei self-diffusion coefficients, ionic conductivity, and ionic association degree are studied by combining NMR and impedance spectroscopy. The best lithium–sulfur composite reported herein achieves a capacity higher than 500 mAh g−1 over 140 cycles with no sign of dendrite formation or failure. This performance is considered sufficiently suitable for the development of high-energy lithium batteries, in particular, considering the expected safety of the cells by employing a nonflammable glyme electrolyte instead of a conventional carbonate-based one. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
batteries; carbon; energy storage; lithium; sulfur; catalysis; electrochemistry
01 Pubblicazione su rivista::01a Articolo in rivista
Carbon composites for a high-energy lithium–sulfur battey with a glyme-based electrolyte / CARBONE, LORENZO; Peng, Jing; AGOSTINI, MARCO; Gobet, Mallory; Devany, Matthew; SCROSATI, Bruno; Greenbaum, Steve; HASSOUN, JUSEF. - In: CHEMELECTROCHEM. - ISSN 2196-0216. - STAMPA. - 4:1(2017), pp. 209-215. [10.1002/celc.201600586]
File allegati a questo prodotto
File Dimensione Formato  
Carbone_Carbon-composites_2017.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.49 MB
Formato Adobe PDF
1.49 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/927479
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 23
social impact