A Study of Capillary Porous Structure and Sorption Properties of Nafion Proton‐Exchange Membranes Swollen in Water
| Autor: | V. M. Mazin, Michael Eikerling, Yu. M. Volfkovich, Jiri Divisek, H. Schmitz, Ulrich Stimming |
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| Rok vydání: | 1998 |
| Předmět: |
Capillary pressure
Materials science Renewable Energy Sustainability and the Environment Capillary action Sorption Porosimetry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Quantitative Biology::Subcellular Processes chemistry.chemical_compound Membrane chemistry Chemical engineering Nafion Desorption Polymer chemistry Materials Chemistry Electrochemistry Porosity |
| Zdroj: | Journal of The Electrochemical Society. 145:2677-2683 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.1838699 |
| Popis: | The standard porosimetry method (SPM) was used to study capillary porous and sorption properties of Nafion proton-exchange membranes. Pore volume-size and surface-size distributions were recorded together with water distributions as a function of capillary pressure and desorption isotherms. The measurements were performed at 20 and 80°C; only a small temperature effect was found for the porous volume structure. Using these data, the charge density at the inner pore surfaces was evaluated. The estimate suggested only a small degree of diffuseness of the proton double layer at the inner pore surface. |
| Databáze: | OpenAIRE |
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