Ion sensing based on frequency-dependent physico-chemical processes at electrode/electrolyte interfaces.

ABSTRACT: Ions play a fundamental role in solid-liquid interface processes, whether as essential or undesirable components, highlighting the need for precise and quantitative real-time monitoring. Electrochemical sensors are identified as promising tools, particularly for field-deployable applications. However, conventional electrochemical sensing is inherently restricted to redox-active species and is often single use, constraining its scope. This study presents electrochemical impedance spectroscopy as an alternative for ion detection, utilizing physico-chemical interactions at the electrode-electrolyte interface. We introduce a first-principles model that describes the interfacial impedance behavior and shows how ion specific processes shape the impedance response. Based on this framework, an ext

SUBMITTER: Mohseni Armaki A 

PROVIDER: S-EPMC12675786 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature