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Experimental study on the start-up with dry gases from normal cell temperatures in self-humidified proton exchange membrane fuel cells

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  • Kong, Im Mo
  • Jung, Aeri
  • Kim, Beom Jun
  • Baik, Kyung Don
  • Kim, Min Soo

Abstract

In this study, the start-up characteristics of PEMFCs (proton exchange membrane fuel cells) was investigated with dry gases from normal cell temperatures above 0 °C. Firstly, the effects of flow arrangements (co-flow and counter-flow) were evaluated at a starting cell temperature of 25 °C. Then, the start-up was successful in both arrangements, but it showed better performance with counter-flow. In addition, the hydrogen concentration was measured and it showed that hydrogen crossover contributes to the membrane hydration and the first phase of dry start-up. However, although the cell temperature rose above 45 °C after start-up form 25 °C with counter-flow arrangement, the restart-up after shut-down failed at a starting cell temperature of 45 °C regardless of flow arrangements. Considering the needs of restart-up, the available starting cell temperature should be improved. For this, after first sub-step of start-up process, relatively low flow rates were maintained to retain produced water without purge so that the membrane can be hydrated sufficiently. With this modified process, denominated as WSP (water storage process) in this study, the dry start-up became successful at a starting cell temperature of 45 °C and the cell performance was remarkably improved especially with counter-flow arrangement.

Suggested Citation

  • Kong, Im Mo & Jung, Aeri & Kim, Beom Jun & Baik, Kyung Don & Kim, Min Soo, 2015. "Experimental study on the start-up with dry gases from normal cell temperatures in self-humidified proton exchange membrane fuel cells," Energy, Elsevier, vol. 93(P1), pages 57-66.
    • Handle: RePEc:eee:energy:v:93:y:2015:i:p1:p:57-66
    DOI: 10.1016/j.energy.2015.09.014
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    References listed on IDEAS

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    Cited by:

    1. Yang, Wonseok & Cha, Dowon & Kim, Yongchan, 2019. "Effects of flow direction on dynamic response and stability of nonhumidification PEM fuel cell," Energy, Elsevier, vol. 185(C), pages 386-395.
    2. Chen, Ben & Wang, Jun & Yang, Tianqi & Cai, Yonghua & Zhang, Caizhi & Chan, Siew Hwa & Yu, Yi & Tu, Zhengkai, 2016. "Carbon corrosion and performance degradation mechanism in a proton exchange membrane fuel cell with dead-ended anode and cathode," Energy, Elsevier, vol. 106(C), pages 54-62.
    3. Chen, Ben & Cai, Yonghua & Yu, Yi & Wang, Jun & Tu, Zhengkai & Chan, Siew Hwa, 2017. "Gas purging effect on the degradation characteristic of a proton exchange membrane fuel cell with dead-ended mode operation II. Under different operation pressures," Energy, Elsevier, vol. 131(C), pages 50-57.
    4. Cha, Dowon & Yang, Wonseok & Kim, Yongchan, 2019. "Performance improvement of self-humidifying PEM fuel cells using water injection at various start-up conditions," Energy, Elsevier, vol. 183(C), pages 514-524.
    5. Pan, Mingzhang & Pan, Chengjie & Li, Chao & Zhao, Jian, 2021. "A review of membranes in proton exchange membrane fuel cells: Transport phenomena, performance and durability," Renewable and Sustainable Energy Reviews, Elsevier, vol. 141(C).
    6. Kim, Young Sang & Kim, Dong Kyu & Ahn, Kook Young & Kim, Min Soo, 2020. "Real-time analysis of dry start-up characteristics of polymer electrolyte membrane fuel cell with water storage process under pressurized condition," Energy, Elsevier, vol. 199(C).
    7. Oh, Taek Hyun, 2016. "A formic acid hydrogen generator using Pd/C3N4 catalyst for mobile proton exchange membrane fuel cell systems," Energy, Elsevier, vol. 112(C), pages 679-685.
    8. Yanbo Yang & Tiancai Ma & Boyu Du & Weikang Lin & Naiyuan Yao, 2021. "Investigation on the Operating Conditions of Proton Exchange Membrane Fuel Cell Based on Constant Voltage Cold Start Mode," Energies, MDPI, vol. 14(3), pages 1-10, January.
    9. Zhang, Qian & Lin, Rui & Técher, Ludovic & Cui, Xin, 2016. "Experimental study of variable operating parameters effects on overall PEMFC performance and spatial performance distribution," Energy, Elsevier, vol. 115(P1), pages 550-560.

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