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Gel-Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks

Lookup NU author(s): Professor Mohamed MamloukORCiD, Emeritus Professor Keith Scott


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© 2020 American Chemical Society.The use of electrically charged, polymerized ionic liquids (polyILs) offers opportunities for the development of gel-polymer electrolytes (GPEs), but the rational design of such systems is in its infancy. In this work, we compare the properties of polyIL/IL GPEs based on 1-butyl-3-(4-vinylbenzyl)imidazolium bis(trifluromethanesulfonyl)imide containing trapped ammonium-based protic ionic liquids (ILs) with an analogous series based on the electrically neutral host polymer 1-(4-vinylbenzyl)imidazole. The materials are synthesized by photopolymerizing ionic and neutral monomers in the presence of diethylmethylammonium trifluoromethanesulfonate, [dema][TfO], diethylmethylammonium trifluoroacetate, [dema][TFAc], and diethylmethylammonium bis[trifluoromethanesulfonyl]imide, [dema][Tf2N], respectively. The resulting materials are characterized using electron microscopy, infrared spectroscopy, thermal analysis, Raman spectroscopy, and AC-impedance analysis. Spectroscopic analysis confirms that the ILs are distributed throughout the polymers, unless the GPE also contains poly(diallyldimethylammonium) bis[trifluoromethanesulfonyl]imide, when separation of the components occurs. The polyIL/IL GPEs are more electrochemically and thermally stable, and up to six times more conductive, than the materials based on the neutral host. As a proof-of-concept demonstration, we show that polyIL/IL gels can be 3D printed using readily available 3D-printing hardware.

Publication metadata

Author(s): Sen S, Goodwin SE, Barbara PV, Rance GA, Wales D, Cameron JM, Sans V, Mamlouk M, Scott K, Walsh DA

Publication type: Article

Publication status: Published

Journal: ACS Applied Polymer Materials

Year: 2021

Volume: 3

Issue: 1

Pages: 200-208

Print publication date: 08/01/2021

Online publication date: 11/12/2020

Acceptance date: 30/11/2020

ISSN (electronic): 2637-6105

Publisher: American Chemical Society


DOI: 10.1021/acsapm.0c01042


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