Physical and electrochemical investigations into blended electrolytes containing a glyme solvent and two bis{(trifluoromethyl)sulfonyl}imide-based ionic liquids


Neale, AR ORCID: 0000-0001-7675-5432, Goodrich, P, Hughes, TL, Hardacre, C, Ball, SC and Jacquemin, J (2017) Physical and electrochemical investigations into blended electrolytes containing a glyme solvent and two bis{(trifluoromethyl)sulfonyl}imide-based ionic liquids Journal of the Electrochemical Society, 164 (8). H5124-H5134. ISSN 0013-4651, 1945-7111

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Abstract

In this paper, we report on thermophysical and electrochemical investigations of a series of molecular solvent/ionic liquid (IL) binary mixture electrolytes. Tetraethylene glycol dimethyl ether (TEGDME) is utilized as the molecular solvent component in separate mixtures with two bis{(trifluoromethyl)sulfonyl}imide anion based ILs paired with similarly sized cyclic and acyclic alkylammonium cations; 1-butyl-1-methylpyrrolidinium bis{(trifluoromethyl)sulfonyl}imide, [Pyrr14][TFSI], or N-butyl-N,N-dimethyl-N-ethylammonium bis{(trifluoromethyl)sulfonyl}imide, [N1124][TFSI]. The blending of ILs with select molecular solvents is an important strategy for the improvement of the typically sluggish transport capabilities of these interesting electrolytic solvents. Bulk volumetric and transport properties are reported as a function of temperature and binary mixture formulation; demonstrating the capacity for enhancing desired properties of the IL. Micro-disk electrode voltammetry and chronoamperometry in O<inf>2</inf>-saturated binary mixture electrolytes was used to assess the effect of formulation on the solubility and diffusivity of the dissolved gas. In addition, further investigations of the behavior of the O<inf>2</inf> redox couple at a GC macro-disk electrode are discussed.

Item Type: Article
Uncontrolled Keywords: 34 Chemical Sciences, 3406 Physical Chemistry
Depositing User: Symplectic Admin
Date Deposited: 09 Dec 2019 16:38
Last Modified: 01 Mar 2026 01:49
DOI: 10.1149/2.0141708jes
Open Access URL: https://doi.org/10.1149/2.0141708jes
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3065622
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