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Analytical Expressions for Quantitative Scanning Electrochemical Microscopy (SECM)

✍ Scribed by Christine Lefrou; Renaud Cornut

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
460 KB
Volume
11
Category
Article
ISSN
1439-4235

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✦ Synopsis

Abstract

Scanning electrochemical microscopy (SECM), is a recent analytical technique in electrochemistry, which was developed in the 1990s and uses microelectrodes to probe various surfaces. Even with the well‐known disc microelectrodes, the system geometry is not as simple as in regular electrochemistry. As a consequence even the simplest experiments, the so‐called positive and negative feedback approach curves, cannot be described with exact analytical expressions. This review gathers all the analytical expressions available in the SECM literature in steady‐state feedback experiments. Some of them are claimed as general expressions, other are presented as approximate. Their validity is discussed in the light of the current understanding and computer facilities.

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