Quaternized poly(phenylene oxide) anion exchange membrane for alkaline direct methanol fuel cells in KOH-free media
| Autor: | Parthasarathi Sridhar, K. Hari Gopi, Akhila Kumar Sahu, Santoshkumar D. Bhat |
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| Rok vydání: | 2016 |
| Předmět: |
Polymers and Plastics
Ion exchange Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Polyelectrolyte 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Membrane chemistry Phenylene Polymer chemistry Materials Chemistry Moiety Amine gas treating 0210 nano-technology |
| Zdroj: | Journal of Applied Polymer Science. 133 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.43693 |
| Popis: | A series of anion exchange membrane (AEM) electrolytes with quaternary ammonium moiety are fabricated from poly (phenylene oxide) for its application in alkaline direct methanol fuel cells (ADMFCs). In the first step, poly(phenylene oxide) (PPO) is successfully chloromethylated by substituting chloromethyl groups in the aryl position of polymer. In the second step, the chloromethylated PPO (CPPO) is further homogeneously quaternized and ion-exchanged to form an AEM. From the second step, series of AEMs are prepared by changing the mole ratio of amine in relation to CPPO. The presence of quaternary ammonium group in the membrane was confirmed by elemental analysis. The fabricated membranes are subjected to cell polarization studies in ADMFCs, wherein quaternized poly(2,6-dimethyl-1,4-phenylene oxide) (CPPO:amine of 1:8) membrane exhibits higher peak power density of 3.5 mW cm−2 when compared with the other ratios of CPPO:amine in the absence of KOH solution. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43693. |
| Databáze: | OpenAIRE |
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