Electrical cross-talk in four-electrode experiments

Vesztergom, Soma; Barankai, Norbert; Kovács, Noémi; Ujvári, Mária; Siegenthaler, Hans; Broekmann, Peter; Láng, Győző G. (2016). Electrical cross-talk in four-electrode experiments. Journal of solid state electrochemistry, 20(11), pp. 3165-3177. Springer 10.1007/s10008-016-3294-4

[img] Text
Vestergom_J Solid State Electrochem_2016.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (1MB) | Request a copy

The subject of this paper is electrical cross-talk, an interference between the current/voltage characteristics of the two working electrodes in four-electrode (generator/collector) systems. Cross-talk arises in electrochemical cells of finite resistance due to the superposition of the electrical fields of the working electrodes, and often causes difficulties in the interpretation of measurement results. In this paper, we present an algorithm for modelling simple generation/collection experiments with a rotating ring–disk electrode (RRDE) immersed into a finite resistance solution of a redox couple. We show that based on the analysis of the Kirchhoff (Laplace) matrix of the simulation mesh, the effect of electrical cross-talk may be accounted for in such experiments. The intensity of cross-talk is found to be heavily influenced by the selection of the reference point for potential measurements; in practice, this is the position of the reference electrode or the tip of the Luggin probe. The devised model is validated by means of a simple and demonstrative experiment.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Vesztergom, Soma; Siegenthaler, Hans and Broekmann, Peter

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science

ISSN:

1432-8488

Publisher:

Springer

Language:

English

Submitter:

Beatrice Niederhauser

Date Deposited:

24 Jan 2017 10:52

Last Modified:

24 Jan 2017 10:52

Publisher DOI:

10.1007/s10008-016-3294-4

BORIS DOI:

10.7892/boris.92726

URI:

https://boris.unibe.ch/id/eprint/92726

Actions (login required)

Edit item Edit item
Provide Feedback