THE CONSTRUCTION OF A NOVEL ELECTROCHEMICAL MEASURING SYSTEM FOR ENHANCED ROTATING RING-DISK ELECTRODE EXPERIMENTS

Abstract

Based on the cutting-edge technology provided by National Instruments' data acquisition cards and on the LabVIEW graphical programming language, a new electrochemical measuring system has been designed, developed, and presented in this paper. The main objective of the development was to design a workstation which is capable of conducting advanced rotating ring-disk electrode experiments that are based on the simultaneous dynamic potential control of both the disk and the ring electrodes. Our system provides great flexibility in defining the perturbing waveforms and visualizing the measured data. By the use of this system, several new experimental methods have been developed; for example, the construction of three dimensional maps of electrode reaction products has become possible.

Keywords:

• dual cyclic voltammetry
• electrochemistry
• electrode processes
• rotating ring-disk electrode

ACKNOWLEDGMENT

Financial support from the Hungarian Scientific Research Fund (OTKA-67994/OMFB-01078/2007, OTKA-PD75445) and MKB Bank Zrt. (Budapest) is gratefully acknowledged. The authors thank National Instruments Hungary Ltd. for the donation of data acquisition cards.