Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/101676
Title: Synthesis and characterization of quadrupolar-hydrogen-bonded polymeric ionic liquids for potential self-healing electrolytes
Author(s): Li, Chenming
Bhandary, RajeshLook up in the Integrated Authority File of the German National Library
Marinow, Anja
Ivanov, Dmitrii
Du, Mengxue
Androsch, RenéLook up in the Integrated Authority File of the German National Library
Binder, Wolfgang H.Look up in the Integrated Authority File of the German National Library
Issue Date: 2022
Type: Article
Language: English
Abstract: Within the era of battery technology, the urgent demand for improved and safer electrolytes is immanent. In this work, novel electrolytes, based on pyrrolidinium-bistrifluoromethanesulfonyl-imide polymeric ionic liquids (POILs), equipped with quadrupolar hydrogen-bonding moieties of ureido-pyrimidinone (UPy) to mediate self-healing properties were synthesized. Reversible addition–fragmentation chain-transfer (RAFT) polymerization was employed using S,S-dibenzyl trithiocarbonate as the chain transfer agent to produce precise POILs with a defined amount of UPy and POIL-moieties. Kinetic studies revealed an excellent control over molecular weight and polydispersity in all polymerizations, with a preferable incorporation of UPy monomers in the copolymerizations together with the ionic monomers. Thermogravimetric analysis proved an excellent thermal stability of the polymeric ionic liquids up to 360 °C. By combining the results from differential scanning calorimetry (DSC), broadband dielectric spectroscopy (BDS), and rheology, a decoupled conductivity of the POILs from glass transition was revealed. While the molecular weight was found to exert the main influence on ionic conductivity, the ultimate strength and the self-healing efficiency (of up to 88%) were also affected, as quantified by tensile tests for both pristine and self-healed samples, evidencing a rational design of self-healing electrolytes bearing both hydrogen bonding moieties and low-molecular-weight polymeric ionic liquids.
URI: https://opendata.uni-halle.de//handle/1981185920/103623
http://dx.doi.org/10.25673/101676
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Polymers
Publisher: MDPI
Publisher Place: Basel
Volume: 14
Issue: 19
Original Publication: 10.3390/polym14194090
Appears in Collections:Open Access Publikationen der MLU

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