Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 44, Issue 45, Pages 25010-25020Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.07.237
Keywords
Air-breathing; PEMFC; High temperature; Cathode flow field; Open ratio
Categories
Funding
- National Natural Science Foundation of China [51706056]
- China Postdoctoral Science Foundation [2018M631927]
- Shenzhen Science and Technology Innovation Commission [JCYJ20180306171730206]
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Air-breathing high-temperature proton exchange membrane fuel cell (HT-PEMFC) gets rid of the cumbersome air supplying systems and avoids the water flooding problem by directly exposing the cathode to air and operating the fuel cell at elevated temperature. Performance of the air-breathing HT-PEMFC is dependent on many factors particularly the cathode flow field configurations. However, studies about air-breathing HT-PEMFCs are quite limited in the literature. In the present study, an experimental testing system was setup for the performance measurement of the air-breathing HT-PEMFC. A 3D numerical model was established and validated by the experimental data. Effects of the cathode flow field configurations including the opening shape, end plate thickness, open ratio and opening direction on performance of the air-breathing HT-PEMFC were experimentally and numerically investigated. It was found that the cathode end plate thickness and upward or sideways orientation have the least effect on the performance. The maximum power density of 160 mW/cm(2) at the current density of 394 mA/cm(2) can be achieved for the cathode flow field with slot holes and an open ratio of 75%. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd.
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