Impact of heat and water management on proton exchange membrane fuel cells degradation in automotive application
| Autor: | Jean-Philippe Poirot-Crouvezier, Céline Bonnaud, F. Nandjou, Yann Bultel, Jean-François Blachot, M. Chandesris |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 020209 energy Multiphysics Evaporation Energy Engineering and Power Technology Humidity Proton exchange membrane fuel cell 02 engineering and technology 021001 nanoscience & nanotechnology Corrosion Membrane Creep Stack (abstract data type) 0202 electrical engineering electronic engineering information engineering Forensic engineering Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material 0210 nano-technology |
| Zdroj: | Journal of Power Sources. 326:182-192 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2016.07.004 |
| Popis: | In Proton Exchange Membrane Fuel Cells, local temperature is a driving force for many degradation mechanisms such as hygrothermal deformation and creep of the membrane, platinum dissolution and bipolar plates corrosion. In order to investigate and quantify those effects in automotive application, durability testing is conducted in this work. During the ageing tests, the local performance and temperature are investigated using in situ measurements of a printed circuit board. At the end of life, post-mortem analyses of the aged components are conducted. The experimental results are compared with the simulated temperature and humidity in the cell obtained from a pseudo-3D multiphysics model in order to correlate the observed degradations to the local conditions inside the stack. The primary cause of failure in automotive cycling is pinhole/crack formation in the membrane, induced by high variations of its water content over time. It is also observed that water condensation largely increases the probability of the bipolar plates corrosion while evaporation phenomena induce local deposits in the cell. |
| Databáze: | OpenAIRE |
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