Journal
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume 46, Issue 13, Pages 18511-18517Publisher
WILEY
DOI: 10.1002/er.8462
Keywords
bipolar plates; PEM fuel cells; performance improvement; wavy flow channel
Categories
Funding
- National Natural Science Foundation of China [52001045]
- Natural Science Foundation of Liaoning Province [2020-HYLH-38]
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The design of wavy flow channels is found to greatly enhance the performance of proton exchange membrane fuel cells at high current densities.
The gas flow field design plays a vital role in the cell performance of proton exchange membrane fuel cells, especially at high current densities. In this study, wavy flow channels are designed and adopted on the cathode side to enhance the mass transport process. Results demonstrate that the wavy flow channels proposed in this paper significantly improve cell performance at high current densities. The power density is improved from 0.121 to 0.314 W/cm(2) at the maximum current density used in this present study. Effects of operating temperature (333.15, 343.15 and 353.15 K), humidification temperature (313.15, 333.15 and 353.15 K), anode volumetric flow rate (0.4, 0.5 and 0.6 L/min), and cathode volumetric flow rate (1.0, 1.5 and 2.0 L/min) on the performance of fuel cells with the novel wavy flow channels are deeply studied. In addition, the influence of the amplitude (0.3, 0.5 and 0.7 mm) and number (5, 7 and 9) of the wavy configurations on performance are illustrated and compared in detail. Furthermore, fuel cells with gradient wavy channels are also designed and experimentally investigated.
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