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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
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Proton Conducting Membranes Based on Poly(Ionic Liquids) Having Phosphonium Counter-Cations
Mehmet Isik1, Luca Porcarelli1, Nerea Lago1
1POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda, Tolosa 72, 20018, Donostia-San Sebastian, Spain.
Macromolecular Rapid Communications
|December 6, 2017
Summary
New protic poly(ionic liquids) with phosphonium cations offer excellent proton conductivity for energy and biosensing applications. These novel membranes demonstrate facile synthesis and good membrane-forming properties.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- Proton conducting polymeric membranes are crucial for various technologies, including energy conversion and biosensing.
- Protic ionic liquids and their polymeric counterparts are emerging as promising materials due to their synthesis ease and superior properties.
Purpose of the Study:
- To synthesize and characterize novel protic poly(ionic liquids) featuring phosphonium counter-cations for the first time.
- To explore the potential of these new materials in proton conduction applications.
Main Methods:
- Synthesis via proton transfer or ion exchange reactions using tertiary phosphines (tributyl-, trioctyl-, tricyclohexyl-).
- Utilized various polymeric anions including polystyrene sulfonic acid and poly(2-acrylamido-2-methyl-1-propanesulfonic acid).
- Characterization using Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA).
Main Results:
- Successfully synthesized protic poly(ionic liquids) with phosphonium cations and characterized their chemical structures.
- Polymers demonstrated good membrane-forming capabilities.
- Achieved high ionic conductivities ranging from 10^-8 to 10^-3 S cm^-1 across a temperature range of 30 to 90 °C.
Conclusions:
- The novel protic poly(ionic liquids) with phosphonium counter-cations exhibit promising properties for proton conduction.
- These materials represent a significant advancement in the development of advanced polymeric membranes for energy and biosensing technologies.
Keywords:
conductivitypolymer electrolyte membrane (PEM)protic ionic liquidsproton conducting polymersthermal stabilityMore Related Videos
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