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The behavior of Li and Mg ions in a polymerized ionic liquid

A polymerized ionic liquid was prepared using 1,3-dibromopropane reacted with 2-methylimidazole, via a two-step synthetic process. Molecular weight analysis via gel permeation chromatography indicated a Mn of 32,600g/mol. An anion exchange is performed to replace the bromide anion of poly(1-propyl-2...

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Published in:	Electrochimica acta 2012-06, Vol.72, p.23-27
Main Authors:	Sutto, Thomas E., Duncan, Teresa T.
Format:	Article
Language:	English
Subjects:	Anion exchanging Applied sciences Bromides Cationic polymerization Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Exact sciences and technology Graphite Ionic conductivity Ionic liquid Ionic liquids Lithium Magnesium Polymer Polymerization
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description	A polymerized ionic liquid was prepared using 1,3-dibromopropane reacted with 2-methylimidazole, via a two-step synthetic process. Molecular weight analysis via gel permeation chromatography indicated a Mn of 32,600g/mol. An anion exchange is performed to replace the bromide anion of poly(1-propyl-2-methylimidazolium bromide) with bis(trifluoromethanesulfonyl)imide (TFSI). Chemical analysis results closely matched expected results. This polymer was then dissolved in acetonitrile with LiTFSI or Mg(ClO4)2 at a ratio of 1 metal cation (Li or Mg) to 3 imidazolium cations. Ionic conductivity measurements indicate ionic conductivity at room temperature of 0.4mS/cm for the Li/polymer mixture and 0.15mS/cm for the Mg/polymer mixture. Electrochemical measurements indicate that this polymer does allow for the reversible intercalation of the Li+ and Mg2+ cations into graphite.
doi_str_mv	10.1016/j.electacta.2012.03.120
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source	ScienceDirect Freedom Collection 2022-2024
subjects	Anion exchanging Applied sciences Bromides Cationic polymerization Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Exact sciences and technology Graphite Ionic conductivity Ionic liquid Ionic liquids Lithium Magnesium Polymer Polymerization
title	The behavior of Li and Mg ions in a polymerized ionic liquid
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