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Reference test presentation

To provide a complete understanding of the phenomena involved in the performance and aging of BP extensive, testing will be carried out in real conditions of use (marine & automotive). SFC and CEA will test the bipolar plates in Automotive and marine conditions.

Reference test procedures

The performance evaluation of the PEMFC system including bipolar plates is based on different ex- and in-situ tests. The multidisciplinary nature of the project involves many specialists whose skills are complementary. They will share their experiences of good experimental practice. In this project, it is possible to identify all important relevant methodology of tests to validate solutions and identify the most suitable to define fuel cell protocols.

Discussion on the tests should allow defining their representativeness and relevance according to previous and on-going FCH-JU projects dealing with test procedures.

Post-mortem analysis

Thanks to the field tests, COBRA project will be able to focus on the analysis of modes of corrosion and mechanical damage. By studying the damage of these bipolar plates and MEA, it will be possible to locate design influence: related to mechanical problems (stress distribution in plates, hydrodynamic phenomena), related to assembly (sealing, welding...), related to forming processes (coating elaboration, forming technology...) and finally, problems related to corrosion (material compatibility, mastery of the morphology of coatings).

Identification of damage will define degradation mechanisms. The identification and description of the degradation will identify remedial efforts and guide the selection and optimization of the proposed solutions in the COBRA project.

Phenomenon modeling

This work package is intended to evaluate the effect of the contaminants released by bipolar plates on the performance of PEMFC. With this aim two approaches will be followed: one experimental, performing experiment at MEA and components level to study the mechanisms of performance degradation due to cationic contamination, and another theoretical, using a model to simulate the effect of the contamination on the PEMFC.

The ultimately goal is to establish some recommendations on operating strategies at system level, in order to mitigate the MEA damaging due to corrosion of bipolar plates.