Advanced materials for improved PEMFC performance and life
| Autor: | Monica E. Tisack, Robert D. Lousenberg, Timothy J. Henry, Dennis Edward Curtin, Paul C. Tangeman |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
chemistry.chemical_classification
Materials science Molar mass Chromatography Renewable Energy Sustainability and the Environment Size-exclusion chromatography Energy Engineering and Power Technology Proton exchange membrane fuel cell Polymer chemistry.chemical_compound Viscosity Membrane chemistry Chemical engineering Nafion Extrusion Electrical and Electronic Engineering Physical and Theoretical Chemistry |
| Zdroj: | Journal of Power Sources. 131:41-48 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2004.01.023 |
| Popis: | Physical and functional attributes are reviewed for recently developed Nafion ® products that satisfy emerging fuel cell requirements—including stronger, more durable membranes, and polymer dispersions of higher quality and consistency for catalyst inks and film formation. Size exclusion chromatography (SEC) analysis has confirmed that dispersion viscosity is related to an “apparent” molar mass, resulting from a molecular aggregate structure. Membranes produced with solution-casting and advanced extrusion technologies exhibit improved water management and mechanical durability features, respectively. Additionally, DuPont has shown that experimentally modified Nafion ® polymer exhibits 56% reduction in fluoride ion generation, which is considered a measure of membrane lifetime. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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