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@ARTICLE{Qiu:873870,
      author       = {Qiu, Diankai and Peng, Linfa and Yi, Peiyun and Lai, Xinmin
                      and Lehnert, Werner},
      title        = {{F}low channel design for metallic bipolar plates in proton
                      exchange membrane fuel cells: {E}xperiments},
      journal      = {Energy conversion and management},
      volume       = {174},
      issn         = {0196-8904},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-01062},
      pages        = {814 - 823},
      year         = {2018},
      abstract     = {This study offers an efficient design method of flow
                      channels of metallic bipolar plates (BPPs) to improve
                      manufacturing technique of BPPs and maximize power density
                      in proton exchange membrane (PEM) fuel cells. Stamped thin
                      metallic BPPs with anticorrosive and conductive coating are
                      promising candidates for replacing conventional carbon-based
                      BPPs. Nevertheless, unlike carbon-based BPPs, the flow
                      channel design of metallic BPPs should take into account not
                      only the reaction efficiency, but also formability due to
                      the possible rupture of the metallic channel during the
                      micro-forming process. In our previous study, a forming
                      limit model was first proposed to predict the maximum
                      allowable channel height by the forming process. This study
                      is conducted to further propose the method of the design and
                      fabrication of metallic BPPs based on the numerical model.
                      In order to determine channel geometry design from
                      formability perspective, response surface method is utilized
                      to build a formability model. Combining the formability
                      model and reaction efficiency, flow field design for
                      metallic BPPs (channel width of 0.9 mm, rib width of
                      0.9 mm, channel depth of 0.4 mm and radius of 0.15 mm)
                      is proposed. Experiments on BPP fabrication and assembled
                      20-cell fuel cell testing are conducted to observe forming
                      quality of micro channel and output performance on the real
                      fuel cell. It is shown that the stamping force grows with
                      increasing channel depth in a nonlinear manner and a blank
                      holder is needed to eliminate the sheet wrinkle in the
                      forming process. The uniformity of the voltage distribution
                      in the 1000 W-class stack further proves the reliability
                      of metallic BPPs designed by our method. The methodology
                      developed is beneficial to the fabrication management of
                      metallic BPPs and effective supplement to the channel design
                      principle for PEM fuel cells.},
      cin          = {IEK-14 / IEK-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IEK-3-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000447102100064},
      doi          = {10.1016/j.enconman.2018.08.070},
      url          = {https://juser.fz-juelich.de/record/873870},
}