A. Saito et al., MECHANISM OF SILVER ELECTRODEPOSITION FROM SILVER-CYANIDE COMPLEX SOLUTIONS, Denki Kagaku Oyobi Kogyo Butsuri Kagaku, 66(11), 1998, pp. 1128-1134
The mechanism of silver electrodeposition from silver-cyanide complex
solutions was investigated. It was found that electrodeposition of sil
ver in the solution containing only 0.1M KAg(CN)(2) occurred by the di
scharge of AgCN near the rest potential, and also by the discharge of
Ag(CN)(2)(-) at a potential less than -0.74V(vs Ag-AgCl). In the solut
ion containing 0.3M Ag(CN) and 2.1M KCN, electrodeposition of silver o
ccurred by the discharge of Ag(CN), near the rest potential, and also
by the discharge of Ag(CN)(3)(2-) at a potential less than -0.98V. In
the solution containing 0.3M Ag(CN) and 4.5M KCN, electrodeposition of
silver occurred by the discharge of Ag(CN)(2)(-) near the rest potent
ial, and also by the discharge of Ag(CN)(3)(2-) at a potential less th
an -1.02V, and also by the discharge of Ag(CN)(4)(3-) at a potential l
ess than -1.25V.