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Updated: Aug 16, 2026

Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes
Published on: June 30, 2019
Variation of the surface stress-charge coefficient of platinum with electrolyte concentration
R N Viswanath1, D Kramer, J Weissmüller
1Forschungszentrum Karlsruhe, Institut für Nanotechnologie, Karlsruhe, Germany.
Abstract:
We report an experimental study of the variation of surface stress with surface charge density for nanoporous Pt immersed in aqueous solutions of NaF of various concentration. As the concentration is reduced, we find initially an increase in the magnitude of the surface stress-charge coefficient, followed by saturation at a value of -1.9 V. Since specific adsorption is expected to be reduced as the solution becomes more dilute, the results support the notion that changes in the bonding at the metal surface play a decisive role in determining the change in the surface stress during double-layer charging.
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