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Extraordinarily small Tafel slope for oxide formation reaction on Pt (1 1 1) surface

Electrochimica Acta, ISSN: 0013-4686, Vol: 78, Page: 592-596
2012
  • 19
    Citations
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  • 39
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    19
    • Citation Indexes
      19
  • Captures
    39

Article Description

Oxide formation reaction current density on Pt (1 1 1) was estimated by time-differentiating oxide growth curves during a potential hold as a function of the potential and the coverage with the oxide below 0.35 ML (monolayer). The Tafel slope was 18–24 mV decade −1 in the condition where the Tafel plot is on a straight line. The reaction mechanism accounting for this small slope was proposed, in which the oxide formation process is assumed as a combination of a fast electron transfer step and a following slow step.

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