Sodium Ion-Conducting Electrolytes Based on Chloroaluminate Ionic Liquids and δ-NaCl.

Autor: Kumar S; Department of Chemistry and Environmental Science, Medgar Evers College of the City University of New York (CUNY), 1638 Bedford Avenue, Brooklyn, NY 11225, USA.; Bioorganic Research Laboratory, Department of Chemistry, University of Delhi, University Enclave, Delhi, 110007, India., Raghupathy R; Department of Chemistry and Environmental Science, Medgar Evers College of the City University of New York (CUNY), 1638 Bedford Avenue, Brooklyn, NY 11225, USA.; Nano and Bioelectrochemistry Research Laboratory and Carbon Dioxide Research and Green Technology Centre, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Tiruvalam Road, Vellore, 632014, India., Vezzù K; Section of Chemistry for the Technology (ChemTech), Department of Industrial Engineering, University of Padova, Via Marzolo 9, I-35131, Padova, PD, Italy., Garaga MN; Department of Physics, Hunter College of CUNY, 695 Park Avenue, New York, NY 10021, USA., Zhu X; Department of Chemistry and Environmental Science, Medgar Evers College of the City University of New York (CUNY), 1638 Bedford Avenue, Brooklyn, NY 11225, USA., Greenbaum S; Department of Physics, Hunter College of CUNY, 695 Park Avenue, New York, NY 10021, USA.; Ph.D. Program in Physics, The Graduate Center of CUNY, 365 5th Avenue, New York, New York, 10016, USA., Di Noto V; Section of Chemistry for the Technology (ChemTech), Department of Industrial Engineering, University of Padova, Via Marzolo 9, I-35131, Padova, PD, Italy.; Centro Studi di Economia e Tecnica dell'Energia Giorgio Levi Cases, Via Marzolo 9, I-35131, Padova, PD, Italy., Vittadello M; Department of Chemistry and Environmental Science, Medgar Evers College of the City University of New York (CUNY), 1638 Bedford Avenue, Brooklyn, NY 11225, USA.; Ph.D. Program in Chemistry, The Graduate Center of CUNY, 365 5th Avenue, New York, New York, 10016, USA.
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2024 Oct 21; Vol. 17 (20), pp. e202400863. Date of Electronic Publication: 2024 Jul 31.
DOI: 10.1002/cssc.202400863
Abstrakt: Sodium-containing ionic liquids are very promising candidates as ion-conducting materials in alternative to electrolytes based on lithium chemistry. Here we investigate a series of seven ionic liquids with formula (EMImCl/(AlCl 3 ) 1.5 )/(δ-NaCl) x (0≤x≤0.74). The salt is comprised of a disordered form of NaCl prepared by metalorganic synthesis, which assures faster dissolution in high concentration. The vibrational investigation carried out by FT-IR spectroscopy in the medium IR region shed light on salt-IL interactions. The ionic conductivity was investigated by Broadband Electric Spectroscopy. The direct current conductivity (σ dc ) profiles versus the reciprocal temperature exhibited a Vogel-Tamman-Fulcher behavior indicating the assistance of micro-Brownian motions to ionic migration. The value of σ dc at 25 °C for x=0.74 was found to be 1.2×10 -2  S cm -1 . Reversible deposition of Na and Al-containing species take place with high Coulombic efficiency (up to 97 %) and a high Na + cation transport number (up to 0.95). The understanding of ionic speciation was investigated in comparison with aqueous acid-base systems exploring the benefits and limitations of such analogy. The role of a Grotthuss-type mechanism facilitating the exchange of chlorides between acidic catenated chloroaluminate species in anionic domains of the ILs is considered.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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