Abstract
The Fickian diffusivity of water in Nafion has been shown to exhibit a local maximum. In the present research effort it is shown that this spike vanishes if the equilibrium water content and chemical diffusivity are modeled carefully. Further, it is shown that permeation experiments falsely can generate a local maximum, if a wrong equilibrium water content relation is used. Finally, in order to study the obtained diffusivity model a parameter variation is carried out using a one-dimensional steady-state model. The effect of diffusivity model, surface roughness and water content driving force is studied.
Original language | English |
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Journal | ECS Transactions |
Volume | 50 |
Issue number | 2 |
Pages (from-to) | 979-991 |
Number of pages | 13 |
ISSN | 1938-6737 |
DOIs | |
Publication status | Published - 2012 |
Event | The 222nd Electrochemical Society Meeting - Duration: 7 Oct 2012 → 12 Oct 2012 |
Conference
Conference | The 222nd Electrochemical Society Meeting |
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Period | 07/10/2012 → 12/10/2012 |