A convenient, efficient and green route for preparing anion exchange membranes for potential application in alkaline fuel cells
| Autor: | Yan Li, Xiaocheng Lin, Yanbo Liu, Qiuhua Li, Tongwen Xu, Liang Wu, Xuhao Liang, Ming Gong |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Bulk polymerization Ion exchange Filtration and Separation Polymer Divinylbenzene Biochemistry Chloride chemistry.chemical_compound Membrane chemistry Chemical engineering Polymer chemistry medicine Hydroxide Alkaline anion exchange membrane fuel cells General Materials Science Physical and Theoretical Chemistry medicine.drug |
| Zdroj: | Journal of Membrane Science. :190-199 |
| ISSN: | 0376-7388 |
| Popis: | Novel solvent-free route for anion exchange membranes (AEMs) preparation has been established by employing an in situ bulk polymerization strategy. Specifically, a mixture of vinylbenzyl chloride (VBC) and divinylbenzene (DVB) monomers rather than organic solvents was used to dissolve cardo polyetherketone (PEK-C) to form a uniform solution to be cast onto SEFAR PETEX fibers, then in situ bulk polymerization of VBC and DVB in the presence of PEK-C as an essential polymer intensifier was performed to incorporate PEK-C into poly(VBC-co-DVB) network. After quaternization, a uniform, translucent and robust AEM was obtained. The preparation conditions of the AEMs have been fully investigated and under the optimized conditions, the obtained AEMs exhibited high IEC (1.43–1.76 mmol g −1 ), favorable water uptake (57.9–82.5%) and hydroxide conductivities (0.019–0.022 S cm −1 ), excellent mechanical strength ( T s >50 MPa) and low methanol permeability (2.82×10 −7 cm 2 ), which are comparable to or better than those of some reported AEMs and implicate great potential for the application in alkaline anion exchange membrane fuel cells (AAEMFCs). Apart from endowing the resultant AEMs with gratifying performances, the method employed herein is environment-friendly particularly due to the avoidance of organic solvents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect