HOMOGENEOUS AND HETEROGENEOUS CATALYTIC REACTIONS IN A COBALT OXIDE GRAPHITE AIR ELECTRODE .4. MECHANISTIC STUDIES ON A RING-DISK CARBON ELECTRODE IN ALKALINE-SOLUTION
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The redox properties of HCoO2- on a glassy carbon electrode in the absence and presence of hydrogen peroxide have been investigated by using cyclic voltammetry and UV-Vis spectroscopy in alkaline solution. Corresponding rotating ring-disk experiments showed that the disk current increased by about 60% in the presence of HCoO2- confirming the important role played by HCoO2- in the homogeneous decomposition of hydrogen peroxide.