Electrochemistry: potentiostat, galvanostat, EIS, FC test station

 


What is new in EC-Lab® V9.2


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

TECHNIQUES

New Pulsed Techniques:

  • SWV: Square wave Voltammetry
  • DNPV: Differential Normal Pulse Voltammetry
  • NPV: Normal Pulsed Voltammetry
  • RNPV: Reverse Normal Pulsed Voltammetry
  • DPA: Differential Pulse Amperometry

New Cyclic Voltammetry Advanced CVA: with:

  • possibility to hold the initial, each vertex and the final potential for a given time and to record the current
  • a table to link sequences with different parameters
  • a recording condition on the cycle number
  • reverse scan option that inverts the potential scan without to modify the vertex limits

New Corrosion applications:

  • Ecorr versus time EVT
  • Corrosimetry (Rp vs. time) CM: offers the possibility to make successive linear polarizations around Ecorr and to calculate and plot Rp, Icorr and Ecorr vs. time

New determination of the ohmic drop (ZIR): using PEIS for a high frequency with possibility to set and use the compensated ohmic drop into the following linked techniques.

NEW FEATURES

Import text data files from other electrochemical software into EC-Lab with an automatic or a manual detection of the file columns.

Possibility to move up and move down a technique within a set of linked techniques.

GRAPH & MATH TOOLS

New possibilities

  • Comment zones with an arrow can be added on the graph.
  • The properties of the zone are adjustable and the number of added zones is not limited.
  • The current acquired data point is displayed in another colour to make the reading easier.
  • XY1 proportional display mode is now automatically activated with Nyquist representation

New fits and analysis

  • Smoothing option using sliding average windows (a .mpp file is generated)
  • Circular fit

New display modes: New admittance determination and black representation with EIS files

New menu item: “Edit surface and mass” to edit and be able to modify the electrode surface area and the characteristic mass used for the density plot.

Improvements

  • The autoscaling functions have been improved.
  • The traces style switches automatically into "lines" (i.e. fast display mode) in running mode if graph optimisations are activated (menu Config -> Options -> General).
  • The contents of the legends are automatically simplified according to the files displayed.
  •  The print window takes the current analysis in progress into account.

ERGONOMY AND OTHER CAPABILITIES

  • The potential range is now defined and adjustable for a better potential resolution on the top of the “Parameter settings” tab rather than in the “Advanced settings” tab.
  • The cycle number is automatically calculated and generated for the Cyclic Voltammetry (CV), the CV advanced and the Staircase Voltammetry (SV).
  • Up to 20 techniques (against 10 before) can now be linked in an experiment.
  • Possibility to enter several current ranges into the parameters table (on different sequences) with the condition that each I range change follows an OCV period. By the same way, it is now not necessary to select "turn to OCV between techniques" to have different I ranges between linked techniques if there are OCV periods within the individual techniques before the I range changes.
  • A graphic description of the settings has been added into the setting window with an icon.
  • A "Display" button has been added in the “process off line” window to display directly the processed file into a graphic window without to load it.
  • Possibility to configure the tool bar buttons with the mouse right click.
  • For MG, MP, CA and CP techniques : the first and last data points are not recorded anymore when no recording conditions are defined.
  • A new window has been added to group or synchronize channels (menu: Edit, Group / Synchronize Channel #).

 

  • It is now possible to stop synchronized channels separately
  • CA technique modification: the IM limit (on |I|) has been replaced by an Imax and Imin limits (on I)
  • The user can now add his own graphic representations to the fast graphic display list (with a edit button in the selector window)

 

  • It is now possible to loop on the same sequence for the battery techniques (GCPL#, PCGA & APGC).
  • Resistance values can now be represented in milli and micro ohms.
  • In the table, a grey cell on the title row and a grey cell on the title column mark and locate the selected cell.
  • The instruments data buffer size has been increased by a factor of 2.5 for the new instruments (VMP3, VSP HCP-803 and EPP series with a new ARM communication board). For example, for the CA technique the number of buffered data points as been increased from 16 000 to 40 000 for a 16 channels configuration.
  • New data process: capacitance calculation: C= Q/V
  • New data process in the capacity and energy per cycle process: energy (total, charge, discharge energy)

Error corrections:

  • USB disconnection error (new devices only)
  • potential scans with <I> recording were not properly working with IR compensation (slow scan case...)
  • Several bad points were recorded at the beginning of the potential scans with the automatic I range (VMP2 & VSP, VMP3 only).
  • It is now possible to link impedance techniques with other ones even if Ece and (or) Analog In# recording are selected.
  • Process Data: the calculation of Q charge and Q discharge per cycle was not always done properly, because of the cycles definition. The user can now select the cycle definition:
    (1) loop counter changes
    or
    (2) charge / discharge alternance (the second option being more adapted to the GCPL techniques)
  • For the impedance techniques, the last point of the frequency list displayed with the "Show frequencies >>" button was not properly written
  • DPV: modification of the reverse scan that was not properly done
  • The content of the clipboard was lost when the print window was opened
  • The print window was generating memory leaks
  • The copy data function was very slow for huge files
  • Strange behaviours could occur when the graphic windows were maximized/minimized
  • The previous traces styles were lost when switching of representation with the quick plot selector
  • Minor other corrections
EC-Lab® V9 - download

EC-Lab® V9 is available for free download to registered users. Click here to access the support section

For a List of web's modification

Click here

 

TOP


< Copyright and sales information >