US4597170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electrode
Assignee: Siemens Energy Inc
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Filing: 1985-03-28
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Granted: 1986-07-01
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Expires: 2005-03-28
Abstract
Abstract Disclosed is a method of coating an electrode on a solid oxygen conductive oxide layer. A coating of particles of an electronic conductor is formed on one surface of the oxide layer and a source of oxygen is applied to the opposite surface of the oxide layer. A metal halide vapor is applied over the electronic conductor and the oxide layer is heated to a temperature sufficient to induce oxygen to diffuse through the oxide layer and react with the metal halide vapor. This results in the growing of a metal oxide coating on the particles of electronic conductor, thereby binding them to the oxide layer.
Inventors
- 👤 Arnold O. Isenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:35
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/1213; H01M4/00; H01M4/86; H01M4/90; H01M4/9016; H01M4/9025; H01M4/9033; H01M4/9041; H01M4/905; H01M4/9066; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
100 words
A method of bonding an electronically conductive layer on a solid, oxygen transporting oxide layer comprising: (A) forming a coating of particles of an electronic conductor on a first surface of said oxide layer; (B) applying a source of oxygen to a second surface of said oxide layer; (C) applying a metal halide vapor to said first surface of said oxide layer; (D) heating said oxide layer to a temperature sufficient to induce oxygen to diffuse through said oxide layer and react with said metal halide vapor, whereby a metal oxide coating grows on said particles of said electronic conductor.
Claim 2
Independent Claim
100 words
A method of bonding an electronically conductive layer on a solid, oxygen transporting oxide layer comprising: (A) forming a coating of particles of an electronic conductor on a first surface of said oxide layer; (B) applying a source of oxygen to a second surface of said oxide layer; (C) applying a metal halide vapor to said first surface of said oxide layer; (D) heating said oxide layer to a temperature sufficient to induce oxygen to diffuse through said oxide layer and react with said metal halide vapor, whereby a metal oxide coating grows on said particles of said electronic conductor.
Claim 3
Dependent Claim
17 words
A method according to claim 1 wherein said oxide layer is a tube, sealed at one end.
Claim 4
Dependent Claim
14 words
A method according to claim 1 wherein said oxide layer consists of stabilized zirconia.
Claim 5
Dependent Claim
14 words
A method according to claim 3 wherein said stabilized zirconia is yttria stabilized zirconia.
Claim 6
Dependent Claim
24 words
A method according to claim 4 wherein said yttria stabilized zirconia is (ZrO 2 ) 0 .90 (Y 2 O 3 ) 0 .10.
Claim 7
Dependent Claim
18 words
A method according to claim 1 wherein said particles are about 1 to about 100 microns in size.
Claim 8
Dependent Claim
30 words
A method according to claim 1 wherein said electronic conductor is a metal selected from the group consisting of platinum, gold, copper, nickel, cobalt, iron, and alloys and mixtures thereof.
Claim 9
Dependent Claim
24 words
A method according to claim 7 wherein said electronic conductor is selected from the group consisting of cobalt, nickel, and alloys and mixtures thereof.
Claim 10
Dependent Claim
25 words
A method according to claim 1 wherein said source of oxygen is selected from the group consisting of oxygen, water, carbon dioxide, and mixtures thereof.
Claim 11
Dependent Claim
16 words
A method according to claim 1 wherein said metal halide vapor is a metal chloride vapor.
Claim 12
Dependent Claim
37 words
A method according to claim 1 wherein said metal halide vapor is a mixture of zirconium chloride and a chloride of a metal, the oxide of which stabilizes zirconia, in a proportion suitable to produce stabilized zirconia.
Claim 13
Dependent Claim
23 words
A method according to claim 1 wherein said temperature is about 1000° to about 1400° C. for about 1 to about 30 minutes.
Claim 14
Dependent Claim
27 words
A method according to claim 1 wherein said electronically conducting layer is an oxide selected from the group consisting of simple oxides, mixed oxides, and mixtures thereof.
Claim 15
Dependent Claim
26 words
A method according to claim 1 wherein said oxide layer is selected from the group consisting of doped lanthanum chromite, doped lanthanum manganite, or chromic oxide.
Claim 16
Independent Claim
149 words
A method of making a fuel electrode on a solid oxide tube sealed at one end, comprising: (A) forming a layer about 50 to about 200 microns thick of metal particles about 1 to about 100 microns in size over the outside of said tube, said metal particles being selected from the group consisting of nickel, cobalt, and alloys and mixtures thereof; (B) passing a source of oxygen selected from the group consisting of oxygen, water, carbon dioxide, and mixtures thereof, through the inside of said tube; (C) passing a vaporous mixture of zirconium chloride and a chloride of a metal, the oxide of which stabilizes zirconia, in a proportion suitable to produce stabilized zirconia, over the outside of said tube; and (D) heating said tube to about 1000° to about 1400° for about 1 to about 30 minutes to produce a skeleton of stabilized zirconia on said particles.
Claim 17
Independent Claim
149 words
A method of making a fuel electrode on a solid oxide tube sealed at one end, comprising: (A) forming a layer about 50 to about 200 microns thick of metal particles about 1 to about 100 microns in size over the outside of said tube, said metal particles being selected from the group consisting of nickel, cobalt, and alloys and mixtures thereof; (B) passing a source of oxygen selected from the group consisting of oxygen, water, carbon dioxide, and mixtures thereof, through the inside of said tube; (C) passing a vaporous mixture of zirconium chloride and a chloride of a metal, the oxide of which stabilizes zirconia, in a proportion suitable to produce stabilized zirconia, over the outside of said tube; and (D) heating said tube to about 1000° to about 1400° for about 1 to about 30 minutes to produce a skeleton of stabilized zirconia on said particles.
References Cited (Backward Citations)
US4242426A
Cited
US4499663A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
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