Abstract
Polydiimidazopyridine was synthesized from 2,3,5,6-tetraaminopyridine and 2,5-dihydroxyterephthalic acid in polyphosphoric acid (PPA) and characterized. Polydiimidazopyridine possessed high viscosity, high thermooxidative stability, and excellent film-forming properties. The polymer was processed from a reaction solution in PPA to proton-conducting membranes featuring high proton conductivity in the temperature range of 20–200°C, being superior in this value to many known membranes.
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ACKNOWLEDGMENTS
The authors are grateful to the Center for molecular composition studies of the Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, and to M.I. Buzin for conducting TGA of the polymers and to Z.S. Klemenkova for recording the IR spectra.
Funding
This study was financially supported by Russian Science Foundation grant no. 18–13–00421.
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Translated by Z. Svitanko
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Ponomarev, I.I., Razorenov, D.Y., Ponomarev, I.I. et al. New Proton-Conducting Polydiimidazopyridine-Based Membrane for an HT-PEM Fuel Cell. Dokl Chem 486, 156–159 (2019). https://doi.org/10.1134/S0012500819060028
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DOI: https://doi.org/10.1134/S0012500819060028