Humidity effect on nanoscale electrochemistry in solid silver ion conductors and the dual nature of its locality.

摘要: Scanning probe microscopy (SPM) is a powerful tool to investigate electrochemistry in nanoscale volumes. While most SPM-based studies have focused on reactions at the tip–surface junction, charge and mass conservation requires coupled intrinsically nonlocal cathodic anodic processes that can be significantly affected by ambient humidity. Here, we explore role of water both processes, associated transport, topographic volume changes depending polarity tip bias. The first-order reversal curve current–voltage technique combined with simultaneous detection sample topography, referred as FORC-IVz, was applied silver solid ion conductor. We found protons generated from affect ionic conduction, particle formation dissolution, mechanical integrity material. This work highlights dual nature (simultaneously local nonlocal) electrochemical SPM studies, which should considered for comprehen...