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Issue 5, 2014
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In situ chemical probing of the electrode–electrolyte interface by ToF-SIMS

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Abstract

A portable vacuum interface allowing direct probing of the electrode–electrolyte interface was developed. A classical electrochemical system consisting of a gold working electrode, platinum counter electrode, platinum reference electrode, and potassium iodide electrolyte was used to demonstrate real-time observation of the gold iodide adlayer on the electrode and chemical species as a result of redox reactions using cyclic voltammetry (CV) and time-of-flight secondary ion mass spectrometry (ToF-SIMS, a vacuum-based surface technique) simultaneously. This microfluidic electrochemical probe provides a new way to investigate the surface region with adsorbed molecules and the region of the diffused layer with chemical speciation in liquids in situ by surface sensitive techniques.

Graphical abstract: In situ chemical probing of the electrode–electrolyte interface by ToF-SIMS

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Publication details

The article was received on 24 Aug 2013, accepted on 08 Nov 2013 and first published on 11 Nov 2013


Article type: Technical Innovation
DOI: 10.1039/C3LC50971K
Citation: Lab Chip, 2014,14, 855-859
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    In situ chemical probing of the electrode–electrolyte interface by ToF-SIMS

    B. Liu, X. Yu, Z. Zhu, X. Hua, L. Yang and Z. Wang, Lab Chip, 2014, 14, 855
    DOI: 10.1039/C3LC50971K

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