% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@PHDTHESIS{Shi:906542,
      author       = {Shi, Yan},
      title        = {{S}tationary and {T}ransient {B}ehaviour of {P}olymer
                      {E}lectrolyte {F}uel {C}ells},
      volume       = {567},
      school       = {RWTH Aachen},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2022-01506},
      isbn         = {978-3-95806-611-3},
      series       = {Schriften des Forschungszentrums Jülich. Reihe Energie
                      $\&$ Umwelt / Energy $\&$ Environment},
      pages        = {viii, 172 S.},
      year         = {2022},
      note         = {RWTH Aachen, Diss., 2021},
      abstract     = {The Low Temperature Polymer Electrolyte Fuel Cell (LT-PEFC)
                      is a promising alternative power source for automotive
                      applications that offers a relatively simple system level,
                      high efficiency, and completely harmless emissions. Fuel
                      cell operations are complex processes that can be influenced
                      by numerous different operating conditions. This thesis,
                      therefore, focuses on the analysis of the impact of
                      different operating conditions on, both static and dynamic
                      behavior of the LT-PEFC. An accuracy study is first
                      performed to evaluate the repeatability and reproducibility
                      of the in-house assembled LT-PEFCs employed in the
                      experiments. Four test cells are assembled and tested under
                      the same operating conditions. It is found that the
                      repeatability and reproducibility of the test cells are
                      better when higher stoichiometry ratios and lower current
                      density are applied in the tests. Overall, the LT-PEFCs used
                      in the experiments are characterized by a high level of
                      accuracy. Various operating parameters are considered in the
                      cell static behavior analysis. With the help of split-plot
                      design, cell orientation, cell temperature, cathodic
                      stoichiometric ratio and backpressure are determined to be
                      the most statistically significant factors for the cell
                      static behavior. Furthermore, the optimal cell performance
                      and corresponding parameter settings are determined via the
                      response surface methodology (RSM). Voltage overshoot and
                      undershoot behavior are used to characterize the cell
                      dynamic behavior. Using split-plot design, the load change
                      step, cell temperature, cathodic stoichiometric ratio and
                      backpressure are selected as the most significant factors
                      for both the voltage undershoot and overshoot behaviors.
                      Additionally, the effect of load change ramp on voltage
                      undershoot and overshoot is determined. The result suggests
                      that the load change with the ramp can significantly reduce
                      the undershoot and overshoot magnitudes. Moreover, the load
                      change with the ramp has a limited impacton the average
                      pressure drop and the ohmic resistance of the test cell.},
      cin          = {IEK-14},
      cid          = {I:(DE-Juel1)IEK-14-20191129},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:0001-2022040531},
      url          = {https://juser.fz-juelich.de/record/906542},
}