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US 5,466,356 AGranted
Potentiostat circuit for electrochemical cells
AssigneeMine Safety Appliances Company
InventorsAlan A. Schneider, Towner B. Scheffler
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Abstract
A simple potentiostat circuit for use in biasing a three-electrode electrochemical cell is described wherein a direct electrical connection is made between the sensing electrode and the reference electrode during normal operation of the cell. Preferably the electrical connection is a resistor. By selecting the resistive value properly, the zero gas current of the cell is eliminated without negatively affecting the response of the cell.
Claims8
In an electrochemical cell having a housing;
- a sensing electrode, a counter electrode and a reference electrode such that all three electrodes are contained within the housing;
- an electrolyte contained within the housing and contacting each electrode;
- and a potentiostat circuit connected to the reference and counter electrodes;
- the improvement comprising having a direct current path between the sensing electrode and the reference electrode during normal operation of the electrochemical cell.
1 more element
An electrochemical cell comprising:
- a housing;
- a sensing electrode;
- a counter electrode;
- a reference electrode;
- wherein all three electrodes are contained within the housing;
- an electrolyte contained within the housing and contacting each electrode;
- and
- a potentiostat circuit connected to the electrodes and further comprising a permanent current path between the sensing electrode and the reference electrode.
5 more elements
Dependencies are inferred from the claim text.