Systematic investigation into the physicochemical properties of deep eutectic AlCl3/amide electrolytes with additives
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Abstract
This study comprehensively examines the physicochemical characteristics, including density, viscosity, electrical conductivity, and electrochemical behavior, of two deep eutectic electrolytes, AlCl3/acetamide and AlCl3/urea, with the incorporation of various additives (LiCl, LiBr, NaCl, NaBr, EC, THF, DCE, and EMIC). The measurements were conducted across a temperature range of 313-373 K. The findings reveal that, with the exception of LiBr and NaBr, all other additives contribute to expanding the electrochemical windows of the AlCl3-amide electrolytes. The addition of alkali metal halides leads to an increase in density, while EMIC and THF exert a more pronounced density-lowering effect compared to other organic additives. Inorganic additives enhance the viscosity of AlCl3/acetamide but produce the opposite effect in AlCl3/urea. Conversely, DCE, THF, and EMIC reduce the viscosity of both electrolytes. All investigated additives, except EC, improve electrical conductivity. Among these, EMIC demonstrates the most significant positive impact on optimizing the overall physicochemical properties of the deep eutectic AlCl3/amide electrolytes.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution license 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Funding data
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Natural Science Foundation of Henan Province
Grant numbers 252300420759 -
Key Scientific Research Project of Colleges and Universities in Henan Province
Grant numbers 25B480009 -
Henan Provincial Science and Technology Research Project
Grant numbers 262102230097
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