Creep behavior of the solid acid fuel cell material CsHSO4
| Autor: | George M. Pharr, Ryan S. Ginder |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Range (particle radiation)
Steady state Materials science 020209 energy Mechanical Engineering Metals and Alloys 02 engineering and technology Activation energy Electrolyte 021001 nanoscience & nanotechnology Condensed Matter Physics Creep Mechanics of Materials 0202 electrical engineering electronic engineering information engineering Forensic engineering Fast ion conductor General Materials Science Composite material Dislocation 0210 nano-technology Electrical conductor |
| Zdroj: | Scripta Materialia. 139:119-121 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2017.06.019 |
| Popis: | Solid acid materials have recently shown great promise as solid-state electrolytes in intermediate temperature fuel cells. However, little is currently known about their mechanical properties, some of which could severely limit their application. In this study, the steady state creep behavior of the prototypical solid acid, CsHSO 4 , is characterized. In its highly conductive superprotonic state (> 141 °C), the material creeps at very high rates, as high as 10 − 2 s − 1 , at stresses in the application design range of only a few MPa. The steady state creep stress exponent n ≅ 3.6 and activation energy Q ≅ 1.02 eV = 98.8 kJ/mol are consistent with a dislocation-based creep mechanism. |
| Databáze: | OpenAIRE |
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