Electrodeposition and Anodic Stripping of Silver on Single Carbon Fibers

摘要

Silver is deposited electrolytically on carbon fibers from acetate buffer (1.25 M KOAc/1.70 M HOAc) in the potential range -0.3 to -0.8 V vs SCE. Chronoamperometric and cyclic voltammetric measurements confirm that the the mechanism of deposition is nucleation; the rate is higher than at large circular glassy carbon electrodes. The silver deposits are more stable, especially with respect to oxidation by air, than are similar deposits for mercury. Preliminary results on codeposition of silver and mercury are also reported.