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Carbon Powder Based Films on Traditional Solid Electrodes as an Alternative to Disposable Electrodes
Author(s) -
Yosypchuk Bogdan,
Barek Jiří,
Fojta Miroslav
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200503488
Subject(s) - electrode , materials science , palladium hydrogen electrode , working electrode , chemically modified electrode , inkwell , reference electrode , absolute electrode potential , electrochemistry , chemical engineering , nanotechnology , optoelectronics , composite material , chemistry , engineering
The covering of conventional solid electrode with a film using an ink containing a conductive powder and a polymer enables to broaden the potential window of the original solid electrode. A solid silver amalgam electrode covered with such a film exhibits a potential window from −600 mV to +1400 mV vs. SCE reference electrode. The renewal of the film is fast and simple: the electrode can be simply wiped with a filter paper to remove the old film and immersed into an ink solution or 1–2 μL of this ink solution can be applied to the surface of the electrode with a micro dispenser to form a new film. Therefore, just the inexpensive film at the electrode surface is disposable and there is no need to dispose the whole, more expensive electrode. Moreover, when a suitable electrochemical pretreatment of the film electrode is applied, the same film can be used for reproducible measurements for several days.