Electrochemistry: Potentiostat, Galvanostat, EIS, FC test station

 


What is new in EC-Lab® V9.3


This new version brings several improvements and new tools for a more friendly use.

NEW FEATURES

Impedance data analysis

  • Simulation with ZSim

 

  • With the possibility to create new equivalent circuits
  • Parameter adjustment in the table and simultaneous graphic display
  • Eight single elements (resistor R, capacitor C, inductor L, constant phase element Q, warburg for semi-infinite diffusion W, warburg for convective diffusion Wd, restricted linear diffusion element M and Gerischer element G).
  • Fitting with ZFit
  • More than 130 equivalent circuits already available with an advanced search mode.
  • Description of the faradic impedance and graphic illustration.

 

  • Equivalent circuit edition: possibility to design circuits.
  • Adjustment or fixation of parameters
  • Choice of the sign of parameters
  • Two minimization methods available: Simplex Downhill and Levenberg-Marquardt

  • Randomization before fitting to select suitable parameters
  • Data points Weight selection (1 or |Z|)
  • Relative error display (Re(Z), -Im(Z), |Z| and phase)

  • Kramers-Kronig criterion

Application of the Kramers-Kronig relationship to determine the imaginary part from the real one (or the opposite) with relative error display.

Batch mode

Possibility to link quasi-unlimited number of experiments with the new batch mode.

Derivative curve

For the cyclic voltammetry data files, a process is available to calculate and display the derivative curve of a voltammogram.

New processes

  • Capacity per cycle for CP, CV and CVA techniques
  • Capacity per mass unit
  • Possibility to reprocess processed files

IMPROVEMENTS

Linked experiment

  • it is now possible to group channels with linked techniques
  • it is allowed to insert more than one loop into a linked experiment
  • one data file can be created at each loop for a given technique in a linked experiment

Power can now be recorded by the instrument upon a user request and displayed on the graph

Import text data file: it is now possible to define new column titles and units

Export as text

  • Processed file can now be exported during the process.
  • Export in the Digielch format
  • Export the user’s units
  • On-line text exportation for battery techniques

EIS techniques

  • Min and max frequency modification during the run
  • Number of points per decade modification during the run
  • Delay (cycles) before measurement for each frequency
  • Approximate EIS experiment duration given as information

ERGONOMY AND OTHER CAPABILITIES

New external device window

PAR QCM922 coupling with our instruments

  • QCM 922 automatic configuration in the external device window

  • Real-time frequency and resistance recording

  • Mass variation calculation in a process window and graphic display

The current value frame has been modified and can be set in row or in column format. The row format offers the possibility to paste the current values to the other tool bars.


Horizontal display of current values


Vertical display of current values

For each technique the sequence table has been adjusted just below the flow diagram to increase the number of visible raw.

Windows XP style is implemented.

The “New device” detection window has been modified for an automatic search of the instruments in the network and to also detect instruments connected via USB

Error corrections:

  • dI/dt calculation was not properly made for the modular galvano technique
  • Potential scan label is now updated automatically when the potential control range is adjusted
  • PEIS and SPEIS were not working properly when linked with OCV with a fixed range
  • Linear fit: correction in the result units
  • Mott-Schottky: surface area and mass were not taken into account in result units
  • Mott-Schottky: improvement of the points selection method
  • Tafel fit: surface area and mass were not taken into account in result units
  • Rp fit: surface area and mass were not taken into account in result units
  • Improvement of the XY1 proportional mode
  • Minor other corrections

EC-Lab® - download

EC-Lab® is available for free download to registered users. Click here to access the support section

For a List of web's modification

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