| Téléchargement | - Voir le manuscrit accepté : Radiation-grafted membranes based on polyethylene for direct methanol fuel cells (PDF, 1.1 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/j.jpowsour.2009.07.021 |
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| Auteur | Rechercher : Sherazi, Tauqir A.1; Rechercher : Guiver, Michael D.1; Rechercher : Kingston, David1; Rechercher : Ahmad, Shujaat; Rechercher : Kashmiri, M. Akram; Rechercher : Xue, Xinzhong1 |
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| Affiliation | - Conseil national de recherches Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
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| Format | Texte, Article |
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| Sujet | Fuel cell; Proton exchange membrane; Radiation grafting; Polyethylene; Membrane-electrode assembly |
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| Résumé | Styrenewas grafted onto ultrahigh molecularweight polyethylene powder (UHMWPE) by gammairradiation using a 60Co source. Compression moulded films of selected pre-irradiated styrene-grafted ultrahigh molecular weight polyethylene (UHMWPE-g-PS) were post-sulfonated to the sulfonic acid derivative (UHMWPE-g-PSSA) for use as proton exchange membranes (PEMs). The sulfonation was confirmed by Xray photoelectron spectroscopy (XPS). The melting and flow properties of UHMWPE and UHMWPE-g-PS are conducive to forming homogeneous pore-free membranes. Both the ion conductivity and methanol permeability coefficient increased with degree of grafting, but the grafted membranes showed comparable or higher ion conductivity and lower methanol permeability than Nafion® 117 membrane. One UHMWPE-g-PS membrane was fabricated into a membrane–electrode assembly (MEA) and tested as a single cell direct methanol fuel cell (DMFC). Low membrane cost and acceptable fuel cell performance indicate that UHMWPE-g-PSSA membranes could offer an alternative approach to perfluorosulfonic acidtype membranes for DMFC. |
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| Date de publication | 2010 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 51718 |
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| Numéro NPARC | 14281020 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 2fcba5b4-8367-40b6-80da-98077504a2a4 |
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| Enregistrement créé | 2010-02-05 |
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| Enregistrement modifié | 2020-04-17 |
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