US4214970A
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Novel electrocatalytic electrodes
Assignee: ELECTRODE Corp A DE CORP
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Filing: 1979-01-15
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Granted: 1980-07-29
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Expires: 1999-01-15
Abstract
Abstract Novel electrodes for oxygen ionization half-cell electrode reactions comprising an electrically conductive porous base having over at least a portion thereof a coating containing an electrocatalyst comprising (1) at least one metal selected from the group consisting of silver and a platinum group metal and (2) a hydrated oxide of at least one metal selected from the group consisting of manganese and nickel, electrochemical cells containing the said electrode at which oxygen is ionized and to novel electrolytic processes with such an electrode.
Inventors
- 👤 Placido M. Spaziante
- 👤 Antonio Nidola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25B11/093; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
42 words
An electrocatalyst consisting of essentially of (A) at least one metal selected from the group consisting of silver and a platinum group metal and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 2
Dependent Claim
42 words
An electrocatalyst consisting of essentially of (A) at least one metal selected from the group consisting of silver and a platinum group metal and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 3
Dependent Claim
16 words
The electrocatalyst of claim 1 wherein the molar ratio (A) to (B) is 0.5 to 2.
Claim 4
Dependent Claim
14 words
The electrocatalyst of claim 1 wherein the molar ratio (A) to (B) is 1.
Claim 5
Dependent Claim
47 words
An electrode comprising an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 6
Dependent Claim
47 words
An electrode comprising an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 7
Dependent Claim
12 words
The electrode of claim 4 wherein the porous substrate is sintered titanium.
Claim 8
Dependent Claim
12 words
The electrode of claim 4 wherein the electrocatalyst is platinum-hydrated manganese dioxide.
Claim 9
Dependent Claim
17 words
The electrode of claim 4 wherein the molar ratio of (A) to (B) is 0.5 to 2.
Claim 10
Dependent Claim
15 words
The electrode of claim 4 wherein the molar ratio of (A) to (B) is 1.
Claim 11
Dependent Claim
116 words
In an electrochemical cell comprised of a cell housing, at least one set of anodes and porous cathodes forming an electrodic gap with a diaphragm or membrane there between, means for introducing and removing anolyte from the anode chamber, means for introducing and removing catholyte from the cathode chamber, means for passing oxygen through the porous cathodes and means for impressing an electric current thereon, the improvement comprising using as the cathode an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 12
Dependent Claim
116 words
In an electrochemical cell comprised of a cell housing, at least one set of anodes and porous cathodes forming an electrodic gap with a diaphragm or membrane there between, means for introducing and removing anolyte from the anode chamber, means for introducing and removing catholyte from the cathode chamber, means for passing oxygen through the porous cathodes and means for impressing an electric current thereon, the improvement comprising using as the cathode an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 13
Dependent Claim
12 words
The cell of claim 9 wherein the porous substrate is sintered titanium.
Claim 14
Dependent Claim
12 words
The cell of claim 9 wherein the electrocatalyst is platinum-hydrated manganese dioxide.
Claim 15
Dependent Claim
17 words
The cell of claim 9 wherein the molar ratio of (A) to (B) is 0.5 to 2.
Claim 16
Dependent Claim
15 words
The cell of claim 9 wherein the molar ratio of (A) to (B) is 1.
Claim 17
Dependent Claim
67 words
An electrolysis process comprising electrolyzing an electrolyte in the interelectrodic gap between an anode and an oxygen depolarized cathode, the said cathode being an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 18
Dependent Claim
67 words
An electrolysis process comprising electrolyzing an electrolyte in the interelectrodic gap between an anode and an oxygen depolarized cathode, the said cathode being an electrically conductive porous substrate containing an electrocatalyst of (A) at least one metal selected from the group consisting of silver and platinum group metals and (B) a hydrated oxide of at least one metal selected from the group consisting of nickel and manganese.
Claim 19
Dependent Claim
12 words
The process of claim 14 wherein the porous substrate is sintered titanium.
Claim 20
Dependent Claim
12 words
The process of claim 14 wherein the electrocatalyst is platinum-hydrated manganese dioxide.
Claim 21
Dependent Claim
17 words
The process of claim 14 wherein the molar ratio of (A) to (B) is 0.5 to 2.
Claim 22
Dependent Claim
15 words
The process of claim 14 wherein the molar ratio of (A) to (B) is 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |