Besides the investigation of single cells, our research is
dedicated to improve the performance of the whole stack and to understand its degradation
behavior.
Therefore our institute developed a method to electrical
and electrochemical characterize an SOC stack during operation. One of the key challenges
in associated with impedance measurements of large area objects, such as the experimental
SOC stack, is that the absolute impedance for a cell in the experimental stack is
in the range of a few mΩ which requires equipment with high precision and minimization
of unwanted stray impedances.
- R. R. Mosbæk*,
- J. Hjelm,
- R. Barfod,
- J. Høgh and
- P. V. Hendriksen 'Electrochemical Characterization and Degradation Analysis of Large SOFC Stacks by Impedance Spectroscopy', Fuel Cells 13, 2013, No.4, 605-611