@article{MuellerHirschfeldLambertzetal.2014,
  author    = {M{\"u}ller, Martin and Hirschfeld, Julian A. and Lambertz, Rita and Schulze Lohoff, Andreas and Lustfeld, Hans and Pfeifer, Heinz and Reißel, Martin},
  title     = {Validation of a novel method for detecting and stabilizing malfunctioning areas in fuel cell stacks},
  series = {Journal of power sources},
  volume    = {272},
  journal   = {Journal of power sources},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1873-2755 (E-Journal); 0378-7753 (Print)},
  doi       = {10.1016/j.jpowsour.2014.08.045},
  pages     = {225 -- 232},
  year      = {2014},
  abstract  = {In this paper a setup for detecting malfunctioning areas of MEAs in fuel cell stacks is described. Malfunctioning areas generate electric cross currents inside bipolar plates. To exploit this we suggest bipolar plates consisting not of two but of three layers. The third one is a highly conducting layer and segmented such that the cross currents move along the segments to the surface of the stack where they can be measured by an inductive sensor. With this information a realistic model can be used to detect the malfunctioning area. Furthermore the third layer will prevent any current inhomogeneity of a malfunctioning cell to spread to neighbouring cells in the stack. In this work the results of measurements in a realistic cell setup will be compared with the results obtained in simulation studies with the same configuration. The basis for the comparison is the reliable characterisation of the electrical properties of the cell components and the implication of these results into the simulation model. The experimental studies will also show the limits in the maximum number of segments, which can be used for a reliable detection of cross currents.},
  language  = {en}
}
@article{ReisselLustfeldHirschfeldetal.2009,
  author    = {Reißel, Martin and Lustfeld, Hans and Hirschfeld, Julian A. and Steffen, Bernhard},
  title     = {Uniqueness of magnetotomography for fuel cells and fuel cell stacks / Lustfeld, H. ; Hirschfeld, J. ; Reißel, M ; Steffen, B.},
  series = {Journal of Physics A: Mathematical and Theoretical. 42 (2009), H. 495205},
  journal   = {Journal of Physics A: Mathematical and Theoretical. 42 (2009), H. 495205},
  isbn      = {0022-3689},
  pages     = {9 S.},
  year      = {2009},
  language  = {en}
}
@article{ReisselLustfeldSteffenetal.2009,
  author    = {Reißel, Martin and Lustfeld, Hans and Steffen, Bernhard and Schmidt, U.},
  title     = {Reconstruction of Electric Currents in a Fuel Cell by Magnetic Field Measurements / Lustfeld, H. ; Reißel, M. ; Steffen, B. ; Schmidt, U.},
  series = {Journal of fuel cell science and technology},
  volume    = {Vol. 6},
  journal   = {Journal of fuel cell science and technology},
  number    = {Iss. 2},
  isbn      = {1550-624X},
  pages     = {021012-1 -- 021012-8},
  year      = {2009},
  language  = {en}
}
@article{ReisselHirschfeldLustfeldetal.2009,
  author    = {Reißel, Martin and Hirschfeld, Julian A. and Lustfeld, Hans and Steffen, Bernhard},
  title     = {Magnetotomography and Electric Currents in a Fuel Cell / Lustfeld, H. ; Reißel, M. ; Steffen, B.},
  series = {Fuel Cells. 9 (2009), H. 4},
  journal   = {Fuel Cells. 9 (2009), H. 4},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  isbn      = {1615-6854},
  pages     = {474 -- 481},
  year      = {2009},
  language  = {en}
}
@article{LustfeldHirschfeldReisseletal.2011,
  author    = {Lustfeld, Hans and Hirschfeld, Julian A. and Reißel, Martin and Steffen, Bernhard},
  title     = {Enhancement of precision and reduction of measuring points in tomographic reconstructions},
  series = {Physics Letters A},
  volume    = {375},
  journal   = {Physics Letters A},
  number    = {8},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0375-9601},
  pages     = {1167 -- 1171},
  year      = {2011},
  language  = {en}
}
@article{LustfeldPithanReissel2012,
  author    = {Lustfeld, Hans and Pithan, C. and Reißel, Martin},
  title     = {Metallic electrolyte composites in the framework of the brick-layer model},
  series = {Journal of the European Ceramic Society},
  volume    = {32},
  journal   = {Journal of the European Ceramic Society},
  number    = {4},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0955-2219},
  doi       = {10.1016/j.jeurceramsoc.2011.10.017},
  pages     = {859 -- 864},
  year      = {2012},
  abstract  = {It is well known that the already large dielectric constants of some electrolytes like BaTiO₃ can be enhanced further by adding metallic (e.g. Ni, Cu or Ag) nanoparticles. The enhancement can be quite large, a factor of more than 1000 is possible. The consequences for the properties will be discussed in the present paper applying a brick-layer model (BLM) for calculating dc-resistivities of thin layers and a modified one (PBLM) that includes percolation for calculating dielectric properties of these materials. The PBLM results in an at least qualitative description and understanding of the physical phenomena: This model gives an explanation for the steep increase of the dielectric constant below the percolation threshold and why this increase is connected to a dramatic decrease of the breakdown voltage as well as the ability of storing electrical energy. We conclude that metallic electrolyte composites like BaTiO₃ are not appropriate for energy storage.},
  language  = {en}
}