GRAPHITE PASTES IN THICK FILM SENSORS AREA

článek ve sborníku ve WoS nebo Scopus

angličtina

Miniature electrochemical sensors can be produced by thick film technology (TFT). The optimal properties of thick film electrode materials are main problems of sensors design. The optimisation of graphite pastes properties for TFT chemical sensor is discussed. The commercial TFT graphite pastes, which are used for common application, are cheap and easily producible, but they are not efficient for electrochemical measurement. These pastes have insufficient sensitivity and they have other bad properties. Graphite pastes, which were designed for special chemical analysis, are technically known, but these pastes are not workable by screen-printing. The first step in rheological properties addition to graphite electrochemical pastes is the goal of this work. This will ensure the pastes printability that will enable the reproducible mass production. The graphite powder with paraffin wax mixture is the basic component of common chemical graphite pastes. There were examined different properties of these pastes in dependence on graphite powder and binding material content in this work. Finally there are described some measurement with commercial and specially prepared TFT graphite electrodes. All measurements were done using a standard electrochemical couple of potassium ferrocyanide-ferricyanide.

electrochemical sensors, graphite paste electrode, thick film electrodes

ADÁMEK, M.; PRÁŠEK, J.; KREJČÍ, J.; FUJCIK, L.

2003

22. 6. 2003

Dubrovnik, Croatia

953-7124-00-2

XVII IMEKO WORLD CONGRESS, Metrology in the 3rd Millennium

1

2148

2152

5