Mitigation of PFSA membrane chemical degradation using composite cerium oxide–PFSA nanofibres

2017 ◽  
Vol 5 (11) ◽  
pp. 5390-5401 ◽  
Author(s):  
M. Zatoń ◽  
J. Rozière ◽  
D. J. Jones
Keyword(s):  
Fuel Cell ◽  
Cell Membrane ◽  
Cerium Oxide ◽  
Composite Membrane ◽  
Chemical Degradation ◽  
Perfluorosulfonic Acid ◽  
Membrane Degradation ◽  
Modified Surface

A perfluorosulfonic acid ionomer–cerium oxide nanofibre web integrated into an asymmetric composite membrane significantly reduces fuel cell membrane degradation, especially with the modified surface placed at the anode.

Current understanding of chemical degradation mechanisms of perfluorosulfonic acid membranes and their mitigation strategies: a review

2017 ◽  
Vol 1 (3) ◽  
pp. 409-438 ◽  
Author(s):  
M. Zatoń ◽  
J. Rozière ◽  
D. J. Jones
Keyword(s):  
Fuel Cell ◽  
Research Priorities ◽  
Mitigation Strategies ◽  
Chemical Degradation ◽  
Future Research ◽  
Degradation Mechanisms ◽  
Perfluorosulfonic Acid ◽  
Membrane Degradation ◽  
Perfluorosulfonic Acid Membranes ◽  
Key Concepts

This article provides a comprehensive perspective of perfluorosulfonic acid fuel cell membrane degradation phenomena, reviews and appraises the effectiveness of key concepts for the mitigation strategies and identifies future research priorities.

scholarly journals Fuel Cell Durability Enhancement with Cerium Oxide under Combined Chemical and Mechanical Membrane Degradation

2015 ◽  
Vol 4 (4) ◽  
pp. F29-F31 ◽  
Author(s):  
C. Lim ◽  
A. S. Alavijeh ◽  
M. Lauritzen ◽  
J. Kolodziej ◽  
S. Knights ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Cerium Oxide ◽  
Membrane Degradation

scholarly journals Modeling Synergistic Fuel Cell Membrane Degradation with Mitigating Effects of Cerium

2020 ◽  
Vol 98 (9) ◽  
pp. 395-405
Author(s):  
Victoria Marie Ehlinger ◽  
Ahmet Kusoglu ◽  
Adam Z. Weber
Keyword(s):  
Fuel Cell ◽  
Cell Membrane ◽  
Membrane Degradation

The Chemistry of Fuel Cell Membrane Chemical Degradation

2019 ◽  
Vol 16 (2) ◽  
pp. 235-255 ◽  
Author(s):  
Frank D. Coms
Keyword(s):  
Fuel Cell ◽  
Cell Membrane ◽  
Chemical Degradation

scholarly journals Sensitivity Based Order Reduction of a Chemical Membrane Degradation Model for Low-Temperature Proton Exchange Membrane Fuel Cells

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5611
Author(s):  
Ambrož Kregar ◽  
Philipp Frühwirt ◽  
Daniel Ritzberger ◽  
Stefan Jakubek ◽  
Tomaž Katrašnik ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Low Temperature ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Chemical Degradation ◽  
Membrane Degradation ◽  
Radical Species ◽  
Exchange Membrane

The chemical degradation of the perfluorinated sulfonic acid (PFSA) ion-exchange membrane as a result of an attack from a radical species, originating as a by-product of the oxygen reduction reaction, represents a significant limiting factor in a wider adoption of low-temperature proton exchange membrane fuel cells (LT-PEMFCs). The efficient mathematical modeling of these processes is therefore a crucial step in the further development of proton exchange membrane fuel cells. Starting with an extensive kinetic modeling framework, describing the whole range of chemical processes leading to the membrane degradation, we use the mathematical method of sensitivity analysis to systematically reduce the number of both chemical species and reactions needed to efficiently and accurately describe the chemical degradation of the membrane. The analysis suggests the elimination of chemical reactions among the radical species, which is supported by the physicochemical consideration of the modeled reactions, while the degradation of Nafion backbone can be significantly simplified by lumping several individual species concentrations. The resulting reduced model features only 12 species coupled by 8 chemical reactions, compared to 19 species coupled by 23 reactions in the original model. The time complexity of the model, analyzed on the basis of its stiffness, however, is not significantly improved in the process. Nevertheless, the significant reduction in the model system size and number of parameters represents an important step in the development of a computationally efficient coupled model of various fuel cell degradation processes. Additionally, the demonstrated application of sensitivity analysis method shows a great potential for further use in the optimization of models of operation and degradation of fuel cell components.

Observation of Fuel Cell Membrane Degradation by Ex Situ and In Situ Electron Paramagnetic Resonance

2008 ◽  
Vol 155 (6) ◽  
pp. B570 ◽  
Author(s):  
B. Vogel ◽  
E. Aleksandrova ◽  
S. Mitov ◽  
M. Krafft ◽  
A. Dreizler ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Fuel Cell ◽  
Cell Membrane ◽  
Ex Situ ◽  
Membrane Degradation ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

scholarly journals Modeling Synergistic Fuel Cell Membrane Degradation with Mitigating Effects of Cerium

2020 ◽  
Vol MA2020-02 (35) ◽  
pp. 2251-2251
Author(s):  
Victoria Marie Ehlinger ◽  
Ahmet Kusoglu ◽  
Adam Z. Weber
Keyword(s):  
Fuel Cell ◽  
Cell Membrane ◽  
Membrane Degradation
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