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@ARTICLE{Suboti:878313,
      author       = {Subotić, Vanja and Menzler, Norbert H. and Lawlor, Vincent
                      and Fang, Qingping and Pofahl, Stefan and Harter, Philipp
                      and Schroettner, Hartmuth and Hochenauer, Christoph},
      title        = {{O}n the origin of degradation in fuel cells and its fast
                      identification by applying unconventional online-monitoring
                      tools},
      journal      = {Applied energy},
      volume       = {277},
      issn         = {0306-2619},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-02771},
      pages        = {115603 -},
      year         = {2020},
      abstract     = {The key advantage of solid oxide fuel cells (SOFC) – high
                      fuel flexibility – still remains the main challenge
                      disturbing their stability, reliability and durability.
                      Specific operating conditions induce and accelerate various
                      degradation mechanisms and reduce the overall fuel cell
                      lifetime. Identifying and predicting the onset of
                      degradation at the preliminary stage is of crucial
                      importance, in order to provoke appropriate countermeasures
                      and to prolong the service time of the fuel cell technology.
                      This is not possible when using available conventional
                      monitoring tools. When employing appropriate
                      online-monitoring tools the principle of which differs from
                      the most common measurement of a linear stationary system,
                      relevant information about the occurring failure modes can
                      be obtained. An example for it is a total harmonic
                      distortion (THD) tool, which is based on identification of
                      the system non-linearity and its alternation from the stable
                      state. Taking this into account, this study moves from the
                      traditional concepts and we show that: (i) non-conventional
                      methodologies can be used to identify relevant failure modes
                      at their preliminary stage, (ii) it is possible to
                      in-operando differentiate individual degradation mechanisms,
                      and (iii) advanced unconventional online-monitoring tools
                      are time-efficient and required measuring time can be
                      reduced by factor up to 20.},
      cin          = {IEK-1 / IEK-14},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-14-20191129},
      pnm          = {135 - Fuel Cells (POF3-135) / SOFC - Solid Oxide Fuel Cell
                      (SOFC-20140602)},
      pid          = {G:(DE-HGF)POF3-135 / G:(DE-Juel1)SOFC-20140602},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000579393800075},
      doi          = {10.1016/j.apenergy.2020.115603},
      url          = {https://juser.fz-juelich.de/record/878313},
}