Molecular Relaxations in Magnesium Polymer Electrolytes via GHz Broadband Electrical Spectroscopy

Authors

  • Dr. Michele Piccolo,

    1. Department of Industrial Engineering, Universitàdegli Studi di Padova, Via Gradenigo 6 A, 35131 Padova (Italy)
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  • Dr. Guinevere A. Giffin,

    1. Department of Chemical Sciences, Universitàdegli Studi di Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+39) 049-827-5229
    2. Current address: MEET Battery Research Centre, Institute of Physical Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 28/30, 48149 Münster (Germany)
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  • Dr. Keti Vezzù,

    1. Veneto Nanotech S.C.p.a. Via San Crispino 106, I-35129 Padova (Italy)
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  • Dr. Federico Bertasi,

    1. Department of Chemical Sciences, Universitàdegli Studi di Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+39) 049-827-5229
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  • Prof. Piergiorgio Alotto,

    1. Department of Industrial Engineering, Universitàdegli Studi di Padova, Via Gradenigo 6 A, 35131 Padova (Italy)
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  • Prof. Massimo Guarnieri,

    1. Department of Industrial Engineering, Universitàdegli Studi di Padova, Via Gradenigo 6 A, 35131 Padova (Italy)
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  • Prof. Vito Di Noto

    Corresponding author
    1. Department of Chemical Sciences, Universitàdegli Studi di Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+39) 049-827-5229
    • Department of Chemical Sciences, Universitàdegli Studi di Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+39) 049-827-5229

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Abstract

GHz broadband electrical spectroscopy (G-BES) is adopted to investigate the molecular relaxations and interactions occurring within the system in an oxygen- and water-free atmosphere in the 300 kHz–20 GHz and −40 to 250 °C frequency and temperature ranges, respectively. A new electrolyte for magnesium secondary batteries that can transfer magnesium ions efficiently is presented. This electrolyte is based on polyethylene glycol 400 and a polymeric form of δ-MgCl2. The information obtained by G-BES is crucial for studying the conduction mechanism of these new electrolytes.

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