التفاصيل البيبلوغرافية
| العنوان: |
The Effect of Platinum Electrocatalyst on Membrane Degradation in Polymer Electrolyte Fuel Cells |
| المؤلفون: |
Merit Bodner, Bernd Cermenek, Mija Rami, Viktor Hacker |
| المصدر: |
Membranes; Volume 5; Issue 4; Pages: 888-902 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2015 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
polymer electrolyte fuel cell, membrane degradation, fluoride emission rate, segmented cell, OCV conditions, relative humidity cycling, membrane resistance, proton conductivity |
| الوصف: |
Membrane degradation is a severe factor limiting the lifetime of polymer electrolyte fuel cells. Therefore, obtaining a deeper knowledge is fundamental in order to establish fuel cells as competitive product. A segmented single cell was operated under open circuit voltage with alternating relative humidity. The influence of the catalyst layer on membrane degradation was evaluated by measuring a membrane without electrodes and a membrane-electrode-assembly under identical conditions. After 100 h of accelerated stress testing the proton conductivity of membrane samples near the anode and cathode was investigated by means of ex situ electrochemical impedance spectroscopy. The membrane sample near the cathode inlet exhibited twofold lower membrane resistance and a resulting twofold higher proton conductivity than the membrane sample near the anode inlet. The results from the fluoride ion analysis have shown that the presence of platinum reduces the fluoride emission rate; which supports conclusions drawn from the literature. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Membrane Applications; https://dx.doi.org/10.3390/membranes5040888 |
| DOI: |
10.3390/membranes5040888 |
| الاتاحة: |
https://doi.org/10.3390/membranes5040888 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.3CA434F2 |
| قاعدة البيانات: |
BASE |