Time-Resolved Measurements of Overlayer Ordering in Electrodeposition
作者： A. C. Finnefrock , L. J. Bullert , K. L. Ringland , P. D. Tingi , H. D. Abruña
DOI: 10.1557/PROC-451-49
关键词:
摘要: We report in situ time-resolved surface x-ray scattering measurements of the underpoten-tial deposition Cu2+ on Pt(111) presence Cl− HClO4 solution. Chronoamperometric (current vs. time) indicate that after a potential step, electrode-position current decays to 1/e its initial value at most 0.12 seconds. In contrast, our simultaneous data reveal overlayer requires order two seconds develop long-range periodic order. These results demonstrate kinetics ordering can be significantly different from charge-transfer and illustrate power for studies electrodeposition.
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