A. Molina et al., NEW METHODS FOR THE APPLICATION OF AN ALTERNATING-CURRENT .3. APPLICATION OF COMBINED DIRECT AND ALTERNATING CURRENTS AT STANDARD ELECTRODES, Journal of electroanalytical chemistry [1992], 369(1-2), 1994, pp. 15-23
A theoretical and experimental analysis of the E-t response correspond
ing to an electrolysis carried out using a combination of direct and a
lternating currents is presented. This study has been applied to a slo
w higher-order electrochemical reaction at standard electrodes (droppi
ng mercury electrode (DME), static mercury drop electrode (SMDE) and p
lane electrode), without restrictions on the values of the amplitude a
nd frequency of the alternating current. The use of current-time funct
ions of this type allows the selective determination of the transition
times of oxidized species for any cycle of the E-t response, as well
as an i-E response for a complete a.c. cycle even when the reduced spe
cies is not initially present in the solution.