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Dynamic response and stability performance of a proton exchange membrane fuel cell with orientational flow channels: An experimental investigation.

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Title: Dynamic response and stability performance of a proton exchange membrane fuel cell with orientational flow channels: An experimental investigation.
Authors: Guo, Zi Rui1 (AUTHOR), Chen, Hao1 (AUTHOR) chenh@bjut.edu.cn, Guo, Hang1 (AUTHOR), Ye, Fang1 (AUTHOR)
Source: Energy Conversion & Management. Dec2022, Vol. 274, pN.PAG-N.PAG. 1p.
Subjects: Proton exchange membrane fuel cells, Channel flow, Dynamic stability, Pressure drop (Fluid dynamics)
Abstract: • Dynamic response of PEMFCs with orientational flow channels is tested. • Orientational flow channels improve water management and performance stability. • Overshoot and undershoot of pressure drop caused by gas–water transfer are observed. • Orientational flow channels reduce response time due to improving gas transfer. The dynamic response of proton exchange membrane fuel cells with the load switching determines the operation stability and life of fuel cells. To investigate the dynamic response of proton exchange membrane fuel cells from the perspective of gas and water delivery, the dynamic response of the fuel cell with the parallel and orientational flow channels was tested under different loads and operating conditions. The experimental results show that the dynamic performance of the fuel cell with orientational flow channels is good after the current and voltage loads are switched. The orientational flow channels improve water management, make the water distribution of the flow channels uniform, increase the membrane hydration, and prevent flooding in the local electrode. The voltage variation coefficient of the cell with orientational flow channels is 1.57%, which is smaller than that of the cell with parallel flow channels 35.6%. Thus, the dynamic performance and stability are improved. The overshoot and undershoot of pressure drop are observed which is due to the changing of gas transferring to the electrode when the load is switched. The orientational flow channels improve the gas transfer capacity, which makes more gas enter the electrode to participate in reactions, thus the orientational flow channels improve dynamic performance and decrease dynamic time constant. [ABSTRACT FROM AUTHOR]
Copyright of Energy Conversion & Management is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 160398757
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Dynamic response and stability performance of a proton exchange membrane fuel cell with orientational flow channels: An experimental investigation.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Guo%2C+Zi+Rui%22">Guo, Zi Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Hao%22">Chen, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chenh@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Hang%22">Guo, Hang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Fang%22">Ye, Fang</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energy+Conversion+%26+Management%22">Energy Conversion & Management</searchLink>. Dec2022, Vol. 274, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Proton+exchange+membrane+fuel+cells%22">Proton exchange membrane fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Channel+flow%22">Channel flow</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+stability%22">Dynamic stability</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure+drop+%28Fluid+dynamics%29%22">Pressure drop (Fluid dynamics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Dynamic response of PEMFCs with orientational flow channels is tested. • Orientational flow channels improve water management and performance stability. • Overshoot and undershoot of pressure drop caused by gas–water transfer are observed. • Orientational flow channels reduce response time due to improving gas transfer. The dynamic response of proton exchange membrane fuel cells with the load switching determines the operation stability and life of fuel cells. To investigate the dynamic response of proton exchange membrane fuel cells from the perspective of gas and water delivery, the dynamic response of the fuel cell with the parallel and orientational flow channels was tested under different loads and operating conditions. The experimental results show that the dynamic performance of the fuel cell with orientational flow channels is good after the current and voltage loads are switched. The orientational flow channels improve water management, make the water distribution of the flow channels uniform, increase the membrane hydration, and prevent flooding in the local electrode. The voltage variation coefficient of the cell with orientational flow channels is 1.57%, which is smaller than that of the cell with parallel flow channels 35.6%. Thus, the dynamic performance and stability are improved. The overshoot and undershoot of pressure drop are observed which is due to the changing of gas transferring to the electrode when the load is switched. The orientational flow channels improve the gas transfer capacity, which makes more gas enter the electrode to participate in reactions, thus the orientational flow channels improve dynamic performance and decrease dynamic time constant. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energy Conversion & Management is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.enconman.2022.116467
    Languages:
      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Proton exchange membrane fuel cells
        Type: general
      – SubjectFull: Channel flow
        Type: general
      – SubjectFull: Dynamic stability
        Type: general
      – SubjectFull: Pressure drop (Fluid dynamics)
        Type: general
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      – TitleFull: Dynamic response and stability performance of a proton exchange membrane fuel cell with orientational flow channels: An experimental investigation.
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            NameFull: Guo, Zi Rui
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            NameFull: Chen, Hao
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            NameFull: Guo, Hang
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            NameFull: Ye, Fang
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            – D: 15
              M: 12
              Text: Dec2022
              Type: published
              Y: 2022
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              Value: 274
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            – TitleFull: Energy Conversion & Management
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