US4187165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar electrode for an electrolyser
Assignee: Alcatel Lucent SAS
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Filing: 1979-02-01
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Granted: 1980-02-05
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Expires: 1999-02-01
Abstract
Abstract A bipolar electrode for an electolyser. It is characterized in that the anode surface and the cathode surface of said electrode both comprise a porous conductive material which includes sintered nickel previously impregnated with nickel molybdate. The invention is used for manufacturing hydrogen by electrolysing an aqueous alkaline solution.
Inventors
- 👤 Anthony J. Appleby
- 👤 Gilles Crepy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:29
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
46 words
A bipolar electrode for an electrolyser having a basic electrolyte, said bipolar electrode including anode and cathode surfaces, the improvement wherein the anode surface and the cathode surface of said electrode both comprise a porous conductive material which includes sintered nickel previously impregnated with nickel molybdate.
Claim 2
Dependent Claim
46 words
A bipolar electrode for an electrolyser having a basic electrolyte, said bipolar electrode including anode and cathode surfaces, the improvement wherein the anode surface and the cathode surface of said electrode both comprise a porous conductive material which includes sintered nickel previously impregnated with nickel molybdate.
Claim 3
Dependent Claim
22 words
An electrode according to claim 1, wherein the ratio by weight between nickel molybdate and nickel lies substantially between 20 and 40%.
Claim 4
Dependent Claim
24 words
An electrode according to claim 1, wherein the porosity of said porous conductive material impregnated with nickel molybdate lies substantially between 30 and 50%.
Claim 5
Dependent Claim
38 words
An electrolyser comprising a basic electrolyte and a bipolar electrode including anode and cathode surfaces, said bipolar electrode anode surface and cathode surface both comprising a porous conductive material which includes sintered nickel previously impregnated with nickel molybdate.
Claim 6
Dependent Claim
38 words
An electrolyser comprising a basic electrolyte and a bipolar electrode including anode and cathode surfaces, said bipolar electrode anode surface and cathode surface both comprising a porous conductive material which includes sintered nickel previously impregnated with nickel molybdate.
Claim 7
Dependent Claim
23 words
An electrolyser according to claim 4, wherein said bipolar electrodes are least two in number and are separated from neighbouring electrodes by separators.
Claim 8
Dependent Claim
18 words
An electrolyser according to claim 5, wherein the bipolar electrodes are corrugated, while the separators are substantially plane.
Claim 9
Dependent Claim
18 words
An electrolyser according to claim 5, wherein the bipolar electrodes are substantially plane, while the separators are corrugated.
Claim 10
Dependent Claim
25 words
An electrolyser according to claim 5, wherein said separator is made of a potassium titanate felt of fibrous texture and bound by a binding agent.
Claim 11
Dependent Claim
12 words
An electrolyser according to claim 8, wherein the binding agent is polytetrafluoroethylene.
Claim 12
Dependent Claim
25 words
An electrolyser according to claim 4, wherein the electrolyte includes an alkaline aqueous solution in a concentration which lies between normal and fourteen times normal.
Claim 13
Dependent Claim
30 words
An electrolyser according to one claim 4, wherein the operation temperature lies between the values corresponding to ambient temperature and 140° C. and that operation pressure is about 50 bars.
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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |