Mj. Pena et al., ELECTRODEPOSITION STUDY ON ULTRAMICROELECTRODES .1. INFLUENCE OF THE SUBSTRATE SURFACE-STATE IN AG CRYSTALLIZATION, Journal of electroanalytical chemistry [1992], 367(1-2), 1994, pp. 85-92
A silver electrodeposition study has been carried out using C and Pt m
icroelectrodes of radius 5 mum. The special characteristics of the mic
roelectrodes have allowed this study to be carried out in experimental
conditions that would be not possible with larger electrodes. For exa
mple, electrochemical measurements have been performed without support
ing electrolyte. Furthermore, the small number of nuclei formed on the
se microelectrodes allow a better understanding of the nucleation and
growth process. Under certain experimental conditions, step increases
in current have been observed in potentiostatic and voltammetric measu
rements and related to the deposition mode. The importance of the subs
trate superficial state for nucleation and growth has been clearly sho
wn.