TY  - JOUR
A1  - Reißel, Martin
A1  - Lustfeld, H.
A1  - Hirschfeld, J.
A1  - Steffen, B.
T1  - Uniqueness of magnetotomography for fuel cells and fuel cell stacks / Lustfeld, H. ; Hirschfeld, J. ; Reißel, M ; Steffen, B.
JF  - Journal of Physics A: Mathematical and Theoretical. 42 (2009), H.  495205
Y1  - 2009
SN  - 0022-3689
SP  - 9 S.
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Lustfeld, H.
A1  - Steffen, B.
A1  - Schmidt, U.
T1  - Reconstruction of Electric Currents in a Fuel Cell by Magnetic Field Measurements / Lustfeld, H. ; Reißel, M. ; Steffen, B. ; Schmidt, U.
JF  - Journal of fuel cell science and technology
Y1  - 2009
SN  - 1550-624X
VL  - Vol. 6
IS  - Iss. 2
SP  - 021012-1
EP  - 021012-8
ER  - 
TY  - JOUR
A1  - Hirschfeld, J. A.
A1  - Lustfeld, H.
A1  - Reißel, Martin
A1  - Steffen, B.
T1  - A novel scheme for precise diagnostics and effective stabilization of currents in a fuel cell stack
JF  - International Journal of Energy Research. 34 (2010), H. 3
Y1  - 2010
SN  - 0363-907X
SP  - 293
EP  - 301
ER  - 
TY  - JOUR
A1  - Hirschfeld, J. A.
A1  - Lustfeld, H.
A1  - Reißel, Martin
A1  - Steffen, B.
T1  - Tomographic diagnostics of current distributions in a fuel cell stack
JF  - International Journal of Energy Research
Y1  - 2010
SN  - 0363-907X
VL  - 34
IS  - 3
SP  - 284
EP  - 292
ER  - 
TY  - JOUR
A1  - Lustfeld, H.
A1  - Hirschfeld, J. A.
A1  - Reißel, Martin
A1  - Steffen, B.
T1  - Enhancement of precision and reduction of measuring points in tomographic reconstructions
JF  - Physics Letters A
Y1  - 2011
SN  - 0375-9601
VL  - 375
IS  - 8
SP  - 1167
EP  - 1171
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Lustfeld, H.
A1  - Pithan, C.
A1  - Reißel, Martin
T1  - Metallic electrolyte composites in the framework of the brick-layer model
JF  - Journal of the European Ceramic Society
N2  - 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.
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.jeurceramsoc.2011.10.017
SN  - 0955-2219
VL  - 32
IS  - 4
SP  - 859
EP  - 864
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Hirschfeld, J. A.
A1  - Lustfeld, H.
A1  - Steffen, B.
T1  - Magnetotomography and Electric Currents in a Fuel Cell / Lustfeld, H. ; Reißel, M. ; Steffen, B.
JF  - Fuel Cells. 9 (2009), H. 4
Y1  - 2009
SN  - 1615-6854
SP  - 474
EP  - 481
PB  - Wiley-VCH
CY  - Weinheim
ER  -