Electrocatalysis Research: Total Solutions

These packages provide a complete solution for the experimental demands of electro catalysis Researchers.

Two options, ECAT-Complete and ECAT-Compact are currently available. Each package contains a complete electrochemical cell, a rotating ring disk electrode setup, a bipotentiostat and a powerful NOVA software to control all the system components.

Typical Applications

  • Mass-transport properties with forced convection condition
  • Electrochemical kinetics studies
  • Electro catalyst material testing
  • Mechanistic information: detection of intermediates through collection and shielding experiments (RRDE)

Key Features

  • RRDE cell designed for the experimental needs of Electrocatalysis Researchers
  • High precision and ultra-low noise electrode rotation from 100 to 10,000 RPM
  • Powerful NOVA software featuring built-in Levich and Koutecký-Levich analysis methods
  • Accurate and reliable electrochemical instrumentation

Bipotentiostatic measurements in hydrodynamic conditions: Oxygen reduction reaction with the RRDE.

Bipotentiostatic measurements in hydrodynamic conditions: Oxygen reduction reaction with the RRDE.

ECAT-Complete

For versatile electrocatalysis research with superior experimental capabilities

  • Autolab PGSTAT302N loaded with additional functional modules
  • RRDE rotator with GC/Pt electrode tip
  • Unitrode pH and temperature sensor
  • Complete RRDE electrochemical cell
  • EIS and true linear voltammetry
  • Dual-mode bipotentiostat
  • NOVA electrochemical software

ECAT-Compact

For high-quality standard measurements including those under forced convection conditions

  • Autolab PGSTAT204 with bipotentiostat module
  • RRDE rotator with GC/Pt electrode tip
  • Complete RRDE electrochemical cell
  • Dual-mode bipotentiostat
  • NOVA electrochemical software

Experimental Method

  • Four-electrode setup (Pt disk/Pt ring)
  • Excess of reactant (O2 gas) in the electrolyte
  • The electrode tip rotated at several rates
  • NOVA software couples the control of the electrode rotator and the bipotentiostat
  • Disk – LSV is applied from zero overpotential to a masstransport limiting potential region
  • Ring – The potential is fixed at a value where the product or intermediate will react

Data and Analysis

  • The hydrodynamic analysis command in NOVA software produces Levich and Koutecký Levich plots from the disk electrode current.
  • The esearcher specifies a fixed potential value at which the data is selected for these plots.
  • Linear regression is applied to every plot.
  • Kinetic rate constant for the reaction, the diffusion coefficient for the reactant or the number of electrons transferred can be calculated based on Levich and Koutecký-Levich theory.

References

http://www.metrohm.com/applications

  • AN-EC-11 – Investigation of intermediates in the electrodeposition of copper using the Autolab RRDE
  • AN-EC-14 – Oxygen reduction reaction with the rotating ring disk electrode

This information has been sourced, reviewed and adapted from materials provided by Metrohm AG.

For more information on this source, please visit Metrohm AG.

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