Back to results
US 2002/0117397 A1Published application
Exhaust oxygen sensor electrode formed with organo-metallic ink additives
OwnerConrad H. Anderson, Kerry J. Gross +2inventors
InventorsConrad H. Anderson, Kerry J. Gross, Richard F. Beckmeyer, William J. LaBarge
Life of this patent
Estimating the term…
Abstract
The sensor comprises an electrode ink composition comprising a noble metal, and organo-metallic materials or combinations thereof. A solid electrolyte is disposed between a sensing electrode, exposed to a sensing gas such as an exhaust gas and a reference electrode, exposed to a reference gas.
Claims33
An electrode composition, comprising:
- about 95 wt % to about 99 wt % noble metal, and about 1 wt % to about 5 wt % metal oxide, based upon the total weight of the electrode.
A sensor, comprising:
- a sensing electrode;
- a reference electrode;
- and
- an electrolyte disposed between and in intimate contact with said sensing electrode and said reference electrode;
- wherein at least one of said sensing electrode and said reference electrode comprises about 95 wt % to about 99 wt % noble metal, and about 1 wt % to about 5 wt % metal oxide, based upon the total weight of the electrode.
2 more elements
A method of making an electrode, comprising:
- forming an ink by combining about 34 wt % to about 99.5 wt % noble metal and up to about 66 wt % organo-metallic material, based upon the total weight of the ink;
- applying said ink to at least a portion of one side of a substrate;
- and
- heating to a temperature sufficient to sinter said metallic material.
1 more element
A method of making a sensor, comprising:
- forming a first ink by combining about 34 wt % to about 99.5 wt % noble metal and up to about 66 wt % organo-metallic material, based upon the total weight of the first ink;
- applying said first ink to at least a portion of a first side of a first substrate;
- applying a second ink to at least a portion of a second side of a second substrate;
- connecting electrical leads to said first ink and said second ink;
- disposing an electrolyte between and in physical contact with said first ink and said second ink to form an assembly;
- forming a protective layer over said first substrate;
- and
- heating said assembly to a temperature sufficient to sinter said metallic material.
5 more elements
A method of sensing exhaust gas, comprising:
- using a sensor comprising a sensing electrode, a reference electrode, an electrolyte disposed between and in intimate contact with said sensing electrode and said reference electrode, wherein at least one of said sensing electrode and said reference electrode comprises about 95 wt % to about 99 wt % noble metal, and about 1 wt % to about 5 wt % metal oxide, based upon the total weight of the electrode;
- disposing said sensor in an exhaust stream;
- contacting said sensing electrode with exhaust gas;
- and
- creating an electromotive force.
2 more elements
Dependencies are inferred from the claim text.