Abstract: A study regarding the electrodeposition of Co oxides from alkaline medium containing 12 mM gluconate ligand and 12 mM Co2+ on glassy carbon, Au, Pt, Ni, Ti and ITO electrode substrate was carried out through cyclic voltammetry technique. Films of cobalt oxides were deposited either anodically by voltage cycling (100 mV s(-1)) between -0.3 and 0.6 V (SCE) or by potentiostatic conditions at potential comprised between 0.2 and 0.6 V for a fixed time of deposition. Analysis of the voltammetric experimental data clearly showed that the rate of cobalt oxide electrodeposition process decreases in the order Au > Pt > GC, Ni > Ti, ITO and the massive cobalt electrodeposition does not proceed to an appreciable extent until potentials of 0.3-0.4 V (SCE) is reached. The effect of the scan rate on the peak potential, peak current, and
Cobalt oxide electrodeposition on various electrode substrates from alkaline medium containing Co-gluconate complexes: a comparative voltammetric study
CASELLA, Innocenzo Giuseppe;CONTURSI, Michela
2012-01-01
Abstract
Abstract: A study regarding the electrodeposition of Co oxides from alkaline medium containing 12 mM gluconate ligand and 12 mM Co2+ on glassy carbon, Au, Pt, Ni, Ti and ITO electrode substrate was carried out through cyclic voltammetry technique. Films of cobalt oxides were deposited either anodically by voltage cycling (100 mV s(-1)) between -0.3 and 0.6 V (SCE) or by potentiostatic conditions at potential comprised between 0.2 and 0.6 V for a fixed time of deposition. Analysis of the voltammetric experimental data clearly showed that the rate of cobalt oxide electrodeposition process decreases in the order Au > Pt > GC, Ni > Ti, ITO and the massive cobalt electrodeposition does not proceed to an appreciable extent until potentials of 0.3-0.4 V (SCE) is reached. The effect of the scan rate on the peak potential, peak current, andI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
