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Electrochemical characterization of commercial and home-made screen-printed carbon electrodes

Morrin, Aoife and Killard, Anthony J. and Smyth, Malcolm R. (2003) Electrochemical characterization of commercial and home-made screen-printed carbon electrodes. Analytical Letters, 36 (9). pp. 2021-2039. ISSN 0003-2719

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Abstract

Screen-printing technology is widely used for the mass-production of disposable electrochemical sensors. The practical utility of carbon screen-printed electrodes has been exploited, despite the fact that little is known about the nature of the electrode reactions. (Wang, J.; Pedrero, M.; Sakslumd, H.; Hammerich, O.; Pingarron, J. Electrochemical activation of screenprinted carbon strips. The Analyst 1996, 121 (3), 345–350). Given the complexity of carbon electrodesin general, and differences in the composition of commercial carbon inks, the question arises as to how such differences and complexity affect their electrochemical reactivity. The aim of this work wasto compare the electroactivity of both commercial electrodesand electrodes fabricated in-house from various commercial inks, in order to find the electrode most suited to amperometric sensor work. Methods of analysis include cyclic voltammetry, amperometry and linear sweep voltammetry. It was found that the commercial working electrodeswere not suited to the high current work of interest, due to their poor charge transfer properties. The in-house electrode had less resistive properties, and was more suited for high current amperometric sensing. Utilizing this electrode configuration, an optimal carbon paste was chosen for the working electrode.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:screen-printed electrode; cyclic voltammetry; linear sweep voltammetry; amperometry; charge transfer;
Subjects:Physical Sciences > Electrochemistry
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Publisher:Taylor & Francis
Official URL:http://dx.doi.org/10.1081/AL-120023627
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:37
Deposited On:01 Nov 2006 by DORAS Administrator. Last Modified 30 Jan 2009 10:54

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