Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1978-03-13
1980-01-08
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
G01N 2730, G01N 2746
Patent
active
041826663
ABSTRACT:
An oxygen sensor is described which includes an electrochemical cell having a gas diffusion electrode which includes a porous metal layer and another layer substantially non-porous to the electrolyte but porous to oxygen, interposed between the porous metal layer and the environment of the sensor as the cathode or working electrode, a salt electrolyte capable of being molten at the temperature of operation of the sensor, a counter electrode as anode, a reference electrode, means for maintaining the working electrode at a constant potential with reference to the reference electrode, and means for determining the current flowing in the cell due to the reduction of oxygen present in the environment of the cell at the gas diffusion electrode and characteristic of the amount of oxygen present, the oxygen sensor including a noble metal and noble metal
oble metal oxide electrode as the counter electrode and the reference electrode respectively. Platinum is the preferred noble metal.
REFERENCES:
patent: 3689394 (1972-09-01), Davies et al.
patent: 3882012 (1975-05-01), Dickinson et al.
Dickinson Thomas
Dobson John V.
Kaplan G. L.
National Research Development Corporation
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