Improved Zn/Zn(II) redox kinetics, reversibility and cyclability in 1-ethyl-3-methylimmidazolium dicyanamide with water and dimethyl sulfoxide added

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2013.12.014
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TypeArticle
Journal titleJournal of Power Sources
ISSN0378-7753
Volume252
Pages327332; # of pages: 6
SubjectBattery electrolyte; Dicyanamide; Diluents; Dimethyl sulfoxide (DMSO); Electrolyte conductivity; Electrolyte systems; Redox kinetics; Room temperature ionic liquids; Dimethyl sulfoxide; Electrolytes; Ionic liquids; Kinetics; Redox reactions; Organic solvents
AbstractDiluents composed of H2O and dimethyl sulfoxide (DMSO) were added to 1-ethyl-3-methylimmidazolium dicyanamide (EMI-DCA), yielding an electrolyte system that is potentially applicable for Zn-air batteries. H 2O is critical for enhancing both the electrolyte conductivity and Zn/Zn(II) redox kinetics, but impairs Zn/Zn(II) redox reversibility and cyclability. DMSO has the ability to stabilize the electrolyte from H 2O decomposition and is beneficial for maintaining Zn/Zn(II) redox reversibility and cyclability. Improved Zn/Zn(II) redox kinetics and reversibility, together with good cyclability up to 200 cycles, was achieved in EMI-DCA + H2O + DMSO in a mole ratio of 1:1.1:2.3. © 2013 Elsevier B.V. All rights reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment (EME-EME)
Peer reviewedYes
NPARC number21270847
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Record identifier5ae10c84-5b74-4de9-8d5a-6d77c2630a3a
Record created2014-02-17
Record modified2016-05-09
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