Calculated values of SB2343 cathodic current efficiency and the electrodeposition rate from each electrolyte.Electrolyte (a): 0.14 M SnSO4 and 0.56 M H2SO4.Electrolyte (b): 0.14 M SnSO4, 0.56 M H2SO4 and 20% by Volume C2H5OH.Electrolyte (c): 0.14 M SnSO4, 0.56 M H2SO4, 20% by Volume C2H5OH and 1.56 × 10− 4 M DMBI.Electrolyte (a)Electrolyte (b)Electrolyte (c)Electrolyte (c)Potential (mV/SCE)− 520− 520− 520− 910P (%)55759094V(μm h− 1)222833.6147Full-size tableTable optionsView in workspaceDownload as CSV
In order, to take more information about the mechanism of electrodeposition tin, we studied the effect of the scan rate potential (ν) on the comportment of electrodeposition of tin from the electrolytes (a), (b) and (c). The obtained results are shown in Fig. 9, Fig. 10 and Fig. 11. It can be seen, for the three electrolytes, thermiogenesis when the potential scan rate (ν) increases, the potentials of the cathodic peaks shift negatively, which is typically associated with irreversible electrochemical reactions. It is noted also that the cathodic peak currents increase.