Electrochemical characteristics of a PEMFC stack under different temperatures and humidity levels

Keng Pin Huang, Chen Yu Chen, Wei-Hsiang Lai

研究成果: Conference contribution

摘要

In the study, a self-made kW-class 40-cell fuel cell stack with an active area of 112.85 cm2 was tested. The tests of the membrane resistance, charge transfer resistance, and the mass transfer resistance at different stack temperatures and gas humidity levels were performed. The results of the electrochemical impedance spectroscopy tests show that the temperature difference between the stack temperature and the dew point temperature has a significant effect. The fuel cell stack has a better performance when the dew point temperature is lower than the stack temperature. Even at low temperatures, it is recommended to maintain the stack temperature higher than the dew point to obtain a better performance of water management. It is concluded that the best temperature difference is between 5 ° C to 10 ° C. Moreover, the gas diffusion is the major promoting to the mass transfer resistance. Therefore, the suitable temperature difference is favorable for the gas diffusion and gas concentration in the gas diffusion layer.

原文English
主出版物標題20th World Hydrogen Energy Conference, WHEC 2014
發行者Committee of WHEC2014
頁面1229-1234
頁數6
ISBN(電子)9780000000002
出版狀態Published - 2014 一月 1
事件20th World Hydrogen Energy Conference, WHEC 2014 - Gwangju, Korea, Republic of
持續時間: 2014 六月 152014 六月 20

出版系列

名字20th World Hydrogen Energy Conference, WHEC 2014
2

Other

Other20th World Hydrogen Energy Conference, WHEC 2014
國家Korea, Republic of
城市Gwangju
期間14-06-1514-06-20

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology

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  • 引用此

    Huang, K. P., Chen, C. Y., & Lai, W-H. (2014). Electrochemical characteristics of a PEMFC stack under different temperatures and humidity levels. 於 20th World Hydrogen Energy Conference, WHEC 2014 (頁 1229-1234). (20th World Hydrogen Energy Conference, WHEC 2014; 卷 2). Committee of WHEC2014.