Spatially resolved electrochemiluminescence on an array of electrodes for the investigation of the development of diffusion layers with time

摘要

For arrays where the electrodes are operated at an identical potential,the total response of the array depends not only on the size of the electrodes in the array,but also on the interelectrode distance d.If the time of the experiment is sufficiently short for the individual diffusion length delta to be extremely small with respect to the radius r of the electrode and if the interelectrode spacing d is large compared to delta developed at the electrodes of the array (d > delta r) the response of the array is the sum of the individual Cottrell responses of the electrodes in the array.At longer times,the diffusion length delta gets larger with respect to r.