Electrode device with a solid state reference system
AssigneeRadiometer Medical A/S
InventorsPoul Ravn Sørensen, Birgit Zachau-Christiansen
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Abstract
The invention concerns an electrode device comprising an ion selective material, a solid state, inner reference system of sodium vanadium bronze and a contact material, where sodium may be reversibly intercalated, in the bronze. Such an electrode device may for instance be sensitive to ions, such as H+, Na+, K+and Ca2+. It may also include a reactive material in which a particular analyte is reacted to form an ion product, to which the ion selective material is sensitive, such as in electrode devices of the Severinghaus-type or in biosensors. The electrode device according to the invention can be prepared by thick film printing.
Claims26
An electrode device comprising an ion selective material, a solid state, inner reference system of a bronze and a contact material, where the reference system mediates the electrochemical correspondence between the ion selective material and the contact material, characterized in
- that the reference system comprises sodium vanadium bronze, where the sodium is incorporated in the vanadium bronze at such a stoichiometric proportion that the insertion/liberation of sodium is reversible.
A method of preparing an electrode device comprising an ion selective material, a solid state, inner reference system of a bronze and a contact material, where the reference system mediates the electrochemical correspondence between the ion selective material and the contact material, comprising using a sodium vanadium bronze for the reference system in which the sodium is incorporated in the vanadium bronze at such a stoichiometric proportion that the insertion/liberation of sodium is reversible.
Dependencies are inferred from the claim text.