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Influenceofconcentrationofzincionsonelectrocrystallizationprocessofzinc

发布时间:04-15
核心提示:Influence?of?concentration?of?zinc?ions?on?electrocrystallization?process?of?zinc
摘??要:Cyclic?voltammetry,?chronoamperometry?and?scanning?electron?microscopy?were?employed?to?study?the?influence?of?Zn^2+?ion?concentration?in?electrolyte?solutions?on?zinc?electroplating?process.?The?results?show?that,?at?high?overpotentials,?the?nucleation?of?zinc?is?instantaneous,?and?nuclear?density?increases?with?the?overpotentials?increasing.?While?at?low?overpotentials,?the?zinc?may?be?preferentially?electrodeposited?on?surface?inhomogeneities?such?as?emergence?points?of?edge,?screw?dislocations,?atomic?disorder,?kink?sites,?or?monoatomic?steps,?and?no?distinguished?nucleation?current?can?be?observed.?The?major?dissolution?peak?in?cyclic?voltammogram?drifts?positively?due?to?the?change?of?the?rate-determining?step?of?zinc?electroplating?processes?from?diffusion?to?the?electrochemical?reaction?with?the?increase?of?Zn^2+?ion?concentration.
Influence?of?concentration?of?zinc?ions?on?electrocrystallization?process?of?zinc.pdf
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