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The EChemPen: A Guiding Hand To Learn Electrochemical Surface Modifications

Valetaud, Mathieu and Loget, Gabriel and Roche, Jérôme and Hüsken, Nina and Fattah, Zahra and Badets, Vasilica and Fontaine, Olivier and Zigah, Dodzi The EChemPen: A Guiding Hand To Learn Electrochemical Surface Modifications. (2015) Journal of Chemical Education, 92 (10). 1700-1704. ISSN 0021-9584

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Official URL: https://doi.org/10.1021/acs.jchemed.5b00149


The Electrochemical Pen (EChemPen) was developed as an attractive tool for learning electrochemistry. The fabrication, principle, and operation of the EChemPen are simple and can be easily performed by students in practical classes. It is based on a regular fountain pen principle, where the electrolytic solution is dispensed at a tip to locally modify a conductive surface by triggering a localized electrochemical reaction. Three simple model reactions were chosen to demonstrate the versatility of the EChemPen for teaching various electrochemical processes. We describe first the reversible writing/erasing of metal letters, then the electrodeposition of a black conducting polymer “ink”, and finally the colorful writings that can be generated by titanium anodization and that can be controlled by the applied potential. These entertaining and didactic experiments are adapted for teaching undergraduate students that start to study electrochemistry by means of surface modification reactions.

Item Type:Article
HAL Id:hal-01216293
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Other partners > Institut Polytechnique de Bordeaux - IPB (FRANCE)
Other partners > Max-Planck-Institut für Intelligente Systeme (GERMANY)
Other partners > Université du Havre - ULH (FRANCE)
Other partners > Université de Rouen - UR (FRANCE)
Other partners > University of Duhok (IRAQ)
Other partners > Université de Caen Basse-Normandie (FRANCE)
Other partners > Université de Bordeaux (FRANCE)
Other partners > Université de Montpellier (FRANCE)
Laboratory name:
Deposited On:27 Feb 2019 09:00

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