  Simultaneous monitoring of ac and dc responses of the electrode-electrolyte
interface with potentiodynamic electrochemical impedance spectroscopy (PDEIS)
in silver underpotential and overpotential deposition on platinum has confirmed
the role of intrinsic Pt surface changes in the irreversibility of Ag
underpotential deposition and disclosed exceptionally high stability of Ag
monolayer on Pt. PDEIS has been demonstrated to be a convenient means for wet
surface chemistry monitoring.
