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Influence of the electrode nano/micro structure on the electrochemical properties of graphite in aluminum batteries

Abstract

Herein we report on a detailed investigation of the irreversible capacity of the first cycle of pyrolytic graphite electrodes in aluminum batteries employing 1-ethyl-3-methylimidazolium chloride: aluminum trichloride (EMIMCl:AlCl3) as electrolyte. The reaction mechanism, involving the intercalation of AlCl4- in graphite, has been fully characterized by correlating the micro/nano-modification to theand electrochemical performance. To achieve this aim a combination of X-ray diffraction (XRD), Small Angle X-ray Scattering (SAXS) and computed tomography (CT) has been used. The reported results evidence that the irreversibility is caused by a very large decrease in the porosity, and consequently leadsing to microstructural changes resulting in the trapping of ions in the graphite. A powerful characterization methodology is established, which can also be applied more in generally to carbon-based energy-related materials.

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Publication details

The article was received on 27 Aug 2018, accepted on 12 Oct 2018 and first published on 12 Oct 2018


Article type: Paper
DOI: 10.1039/C8TA08319C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  • Open access: Creative Commons BY license
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    Influence of the electrode nano/micro structure on the electrochemical properties of graphite in aluminum batteries

    G. Greco, D. Tatchev, A. Hoell, M. Krumrey, S. Raoux, R. Hahn and G. A. Elia, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA08319C

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