Amidine-based ionic liquid analogues with AlCl3: a credible new electrolyte for rechargeable Al batteries

Anthony J. Lucio; Igor Efimov; Oleg N. Efimov; Christopher J. Zaleski; Stephen Viles; Beata B. Ignatiuk; Andrew P. Abbott; A. Robert Hillman; Karl S. Ryder

doi:10.1039/D1CC02680A

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Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries†

Anthony J. Lucio,

*^a Igor Efimov,^a Oleg N. Efimov,^b Christopher J. Zaleski,

^c Stephen Viles,^a Beata B. Ignatiuk,^a Andrew P. Abbott,

^a A. Robert Hillman

^a and Karl S. Ryder

Author affiliations

* Corresponding authors

^a Materials Centre, School of Chemistry, University of Leicester, Leicester LE1 7RH, UK
E-mail: ajl71@le.ac.uk

^b Russian Acad. Sci., Inst. Prob. Chem. Phys., 1 Acad. Semenov Ave, Chernogolovka 142432, Moscow Region, Russia

^c Wolfson School of Mechanical Electrical & Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK

Abstract

Here we demonstrate the generation of novel ionic liquid analogue (ILA) electrolytes for aluminium (Al) electrodeposition that are based on salts of amidine Lewis bases. The electrolytes exhibit reversible voltammetric plating/stripping of Al, good ionic conductivities (10–14 mS cm⁻¹), and relatively low viscosities (50–80 cP). The rheological properties are an improvement on analogous amide-based ILAs and make these liquids credible alternatives to ILAs based on urea or acetamide, or conventional chloroaluminate ionic liquids (IL) for Al battery applications.

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Article information

DOI: https://doi.org/10.1039/D1CC02680A
Article type: Communication
Submitted: 21 May 2021
Accepted: 18 Aug 2021
First published: 18 Aug 2021
This article is Open Access

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Chem. Commun., 2021,57, 9834-9837

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Amidine-based ionic liquid analogues with AlCl₃: a credible new electrolyte for rechargeable Al batteries

A. J. Lucio, I. Efimov, O. N. Efimov, C. J. Zaleski, S. Viles, B. B. Ignatiuk, A. P. Abbott, A. R. Hillman and K. S. Ryder, Chem. Commun., 2021, 57, 9834 DOI: 10.1039/D1CC02680A

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