MERCURY-PLATED ROTATING-RING DISK ELECTRODE
The rotating ring-dlisk electrode (rrde) is a well-proven technique that has found a variety of applications (1). Firstly collection efficilency measurements perimit the kinetics and mechanism of the decomposition of species electrogenerated at the disk to be determined (2,3). Secondly, as an analyt...
| Hlavní autoři: | , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
1983
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| Shrnutí: | The rotating ring-dlisk electrode (rrde) is a well-proven technique that has found a variety of applications (1). Firstly collection efficilency measurements perimit the kinetics and mechanism of the decomposition of species electrogenerated at the disk to be determined (2,3). Secondly, as an analytical tool the use of so-called "titration curves" may permit the measurement of low concentrations of electroinactive species (4). In all applicationri the rrde is carefully polished flat to ensure laminar hydrodynamic flow over the electrode and the accurately measured radii defining the geometry of the electrode used to interpret the experimental data. These considerations have typically resulted in eliectrodes being constructed from metals such as platinum or gold which have a limited cathodic potential range. To maximize this range, one would ideally use a mercury surface. Methods (5) have appeared for mercury-plaisd rotating disks but not for ring-disk electrodes where measurements are much more sensitive to surface flatness. |
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