RelaxIS
Data Analysis for Electrochemical Impedance Spectroscopy
Application examples
- Temperature-dependent conductivity measurements
- Investigation of battery components
- Investigation of the differential double layer capacity in systems with ionic liquids
- Impedance spectroscopy of dye solar cells
Features
- Robust customizable fitting algorithms
- Autofit-function for quickly fitting arbitrary models without parameter initialization
- Parameter-initialization from shapes (i.e. semicircles) drawn into a spectrum
- Monte-Carlo based estimation of fit parameter uncertainties
- Parameter influence tester showing the impact of each parameter on the fit
- Import of arbitrary, column-based text files using an easy-to-use wizard
- Native support of numerous impedance data formats
- Arbitrary number of spectra per project
- Storage of metadata for each spectrum
- Editing of the raw impedance data
- Ability to use dielectric spectra, given in, e.g., permittivity and with unknown cell geometry
- Within one project, spectra can be assigned to various, arbitrary equivalent circuits
- Circuit-Screening tool supporting the selection of suitable equivalent circuits
- Visualization of data and fit results in impedance, admittance or capacitance representations in Nyquist or Bode plots (customizable)
- Ability to show multiple different plots (i.e. Nyquist and Bode) at the same time.
- Live-analysis views that automatically show, i.e., DRT or Kramers-Kronig tests while browsing spectra
- Side-to-side comparison (overlay) of multiple spectra
- Template-based graph style customization
- 3D-Plot overlay of multiple spectra
- Extensive library of pre-defined equivalent circuits
- Simple derivation of initial values using the intuitive circle- or line-tool, or a genetic algorithm
- Live preview of changes in the fit parameters
- Test Fit function to preview the fit results
- Batch fitting of several related spectra
- Fit wizard for automated evaluation of particular types of spectra (e.g. conductivity measurements)
- Multi-spectrum fits, i.e., "global parameters" or with parameters estimated from metadata-based models.
- Result Preview and Evaluation feature that allows the plotting and evaluation of the fit parameters
as a function of metadata
- This implements Arrhenius- and VFT-Fits
- Includes various other models
- Built-in Mott-Schottky analysis of a series of spectra
- RelaxIS Remote feature for autonomous evaluation and storage of impedance data
- RelaxIS SDK that allows the enhancement of the basic features with plugins
- Plugins are for example new file formats or circuit elements (and much more)
- Integrated Code Editor to help with the developement of plugins
- RelaxIS WCF Link feature for calling RelaxIS functions (i.e. fitting) from external software on the same PC
- DRT (Distribution of Relaxation Times) Analysis
- Linear Kramers-Kronig Test
- Z-Hit calculation
- Residual analysis and visualization
- Circuit simulator for application in research and teaching
- Define multiple models with separate, customizable parameter values
- Freely change the simulated frequency range and number of datapoints
- Customizable overlay plot of all simulated models
- Ability to add normal-distributed noise to the data
- Export-to-RelaxIS function to send simulated spectra to RelaxIS as data
- Extensive export functions for every data type
- Fit results
- Impedance spectra with fits
- Simulated spectra
- Graphs as images
- Images of Equivalent Circuits
- Reporting feature that allows the creation of rich, HTML-based summarys of fit results
Licensing
- Floating license - installation possible on multiple machines, simultaneous usage on one machine per license.
Details and requirements
Operating system: | Windows 10, Windows 11 with .NET Framework 4.7.2 |
License types: | permanent or time-limited |
License techniques: | offline (USB dongle) or online |