Cation-Dependent Interfacial Properties Determine the Activity of Pt(111) Electrodes in Alkaline Media.

ABSTRACT: Energy conversion and storage technologies require optimal electrode-electrolyte interfaces to drive electrocatalytic reactions. However, the impact of interfacial phenomena on the catalytic activity remains debated. This study investigates the role of alkali metal cations in interfacial properties and correlates them with electrocatalytic activities toward several energy-related reactions in alkaline media using model Pt(111) single crystal electrodes. Through electrochemical impedance spectroscopy and laser-induced current transient techniques, interfacial parameters, such as the double layer capacitance, the potential of the capacitance minimum, and the potential of maximum entropy (pme), are determined. The latter exhibit a linear dependence on cation hydration energies. Notably, two d

SUBMITTER: Yu H 

PROVIDER: S-EPMC12645477 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature