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Journal articles
The EChemPen: A Guiding Hand To Learn Electrochemical Surface Modifications
Abstract : 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.
Cited literature [6 references]
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01216293
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, February 27, 2019 - 10:00:37 AM
Last modification on : Friday, October 22, 2021 - 2:42:35 PM
Long-term archiving on: : Tuesday, May 28, 2019 - 1:29:27 PM
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, February 27, 2019 - 10:00:37 AM
Last modification on : Friday, October 22, 2021 - 2:42:35 PM
Long-term archiving on: : Tuesday, May 28, 2019 - 1:29:27 PM
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Valetaud_21900.pdf
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