期刊
JOURNAL OF POWER SOURCES
卷 343, 期 -, 页码 135-141出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.01.047
关键词
Polymer electrolyte fuel cell; Oxygen partial pressure; Current density; Liquid water droplet
资金
- New Energy and Industrial Technology Development Organization (NEDO)
- Japan Science and Technology Agency (JST), Japan
Understanding the reaction distributions inside a polymer electrolyte fuel cell (PEFC) is essential for the higher performance and durability. We have developed a new see-through cell and visualized the distributions of oxygen partial pressure and current density inside a running PEFC at the temperature of 40 and 80 degrees C and the relative humidity of 53%. The oxygen utilization was changed from 0% to 80% by changing the current density. At higher oxygen utilizations, the current density was higher and therefore the water generation. Generated water droplets in the flow channel were also visualized, allowing for the simultaneous visualization of the distribution of the oxygen partial pressure, current density, and water droplets. By combining the observations of all three parameters, the reactions inside a membrane electrode assembly were discussed. (C) 2017 Elsevier B.V. All rights reserved.
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