Herein we report a novel study on the reaction mechanism of non-aqueous aluminum/graphite cell chemistry employing 1-ethyl-3-methylimidazolium chloride:aluminum trichloride (EMIMCl:AlCl3) as the electrolyte. This work highlights new insights into the reversibility of the anion intercalation chemistry besides confirming its outstanding cycle life exceeding 2000 cycles, corresponding to more than 5 months of cycling test. The reaction mechanism, involving the intercalation of AlCl4− in graphite, has been fully characterized by means of ex situ X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption near edge structure spectroscopy (XANES) and small-angle X-ray scattering (SAXS), evidencing the accumulation of anionic species into the cathode as the main factor responsible for the slight initial irreversibility of the electrochemical process.

Insights into the reversibility of aluminum graphite batteries / Elia, Giuseppe Antonio; Hasa, Ivana; Greco, Giorgia; Diemant, Thomas; Marquardt, Krystan; Hoeppner, Katrin; Behm, R Jürgen; Hoell, Armin; Passerini, Stefano; Hahn, Robert. - In: JOURNAL OF MATERIALS CHEMISTRY. A. - ISSN 2050-7496. - 5:20(2017), pp. 9682-9690. [10.1039/C7TA01018D]

Insights into the reversibility of aluminum graphite batteries

Elia, Giuseppe Antonio;Hasa, Ivana;Greco, Giorgia;Passerini, Stefano
;
2017

Abstract

Herein we report a novel study on the reaction mechanism of non-aqueous aluminum/graphite cell chemistry employing 1-ethyl-3-methylimidazolium chloride:aluminum trichloride (EMIMCl:AlCl3) as the electrolyte. This work highlights new insights into the reversibility of the anion intercalation chemistry besides confirming its outstanding cycle life exceeding 2000 cycles, corresponding to more than 5 months of cycling test. The reaction mechanism, involving the intercalation of AlCl4− in graphite, has been fully characterized by means of ex situ X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption near edge structure spectroscopy (XANES) and small-angle X-ray scattering (SAXS), evidencing the accumulation of anionic species into the cathode as the main factor responsible for the slight initial irreversibility of the electrochemical process.
2017
Aluminum; electric batteries; electrolytes; graphite; intercalation; secondary batteries; X ray absorption near edge structure spectroscopy; X ray diffraction; X ray photoelectron spectroscopy; X ray scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Insights into the reversibility of aluminum graphite batteries / Elia, Giuseppe Antonio; Hasa, Ivana; Greco, Giorgia; Diemant, Thomas; Marquardt, Krystan; Hoeppner, Katrin; Behm, R Jürgen; Hoell, Armin; Passerini, Stefano; Hahn, Robert. - In: JOURNAL OF MATERIALS CHEMISTRY. A. - ISSN 2050-7496. - 5:20(2017), pp. 9682-9690. [10.1039/C7TA01018D]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1555157
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