Impedance spectrometer V06

The further development of battery cells and fuel cells towards higher capacities and larger active surfaces has been an ongoing process in electrochemistry. This trend has led to ever lower electrochemical impedances as larger active areas offer less electrical resistance.

To generate high-quality impedance spectra, a signal response in the range of 10 mV to 20 mV is expected. As the impedance spectrometer is operated in galvanostatic mode, it was necessary to provide a more powerful current source for a higher modulation current.

The V06 impedance spectrometer was therefore equipped with a powerful current source that can supply a modulation current of up to +-10 A. This improvement enabled the impedances of fuel cells and batteries to be determined extremely precisely in the micro-ohm range.