FRA32M - Impedance analysis

Electrochemical impedance spectroscopy (EIS) is a powerful technique for the characterization of electrochemical systems. It has widespread application in the field of characterization of materials. It is routinely used in the characterization of coatings, batteries, fuel cells, and corrosion phenomena. It has also been used extensively as a tool for investigating mechanisms in electrodeposition, electrodissolution, passivity and corrosion studies, diffusion of ions across membranes, study of semi-conductor interfaces and biosensors. 

The Autolab users can perform EIS measurements with the FRA32M module. Installation of this module in the main unit allows one to perform both potentiostatic and galvanostatic impedance measurements over a wide frequency range of 10 µHz to 32 MHz (limited to 1 MHz in combination with the Autolab PGSTAT). In addition to the classical EIS, the NOVA software also allows the users to modulate other outside signals such as rotation speed of a rotating disk electrode or the frequency of a light source to perform Electro-hydrodynamic or Photo-modulated impedance spectroscopy.

The FRA32M module comes with a powerful fit and simulation software for the analysis of impedance data.

Key features:

  • Frequency range 10 µHz - 32 MHz (10 µHz - 1 MHz in combination with the Autolab PGSTAT)
  • Frequency resolution 0.003 %
  • Input range 10 V
  • Signal types 1 sine, 5 sine, 15 sine
  • Input channels E and I from the potentiostat/galvanostat or X and Y external signals
  • AC amplitude 0.2 mV to 0.35 V rms in potentiostatic mode
  • 0.0002 - 0.35 times current range in galvanostatic mode
  • Data presentation Nyquist, Bode, Admittance, Dielectric, Mott-Schottky and more
  • Data analysis Fit and Simulation, Find circle
  • Graphical Equivalent Circuit in NOVA