These packages provide a complete solution for the experimental demands of electro catalysis Researchers.
![](https://d12oja0ew7x0i8.cloudfront.net/images/Article_Images/ImageForArticle_14364(1).jpg)
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.](https://d12oja0ew7x0i8.cloudfront.net/images/Article_Images/ImageForArticle_14364(2).jpg)
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.
![](https://d12oja0ew7x0i8.cloudfront.net/images/Article_Images/ImageForArticle_14364(3).jpg)
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
![](https://d12oja0ew7x0i8.cloudfront.net/images/Article_Images/ImageForArticle_14580(3).png)
This information has been sourced, reviewed and adapted from materials provided by Metrohm AG.
For more information on this source, please visit Metrohm AG.