US4670360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell
Assignee: BASF SE
•
Filing: 1985-08-12
•
Granted: 1987-06-02
•
Expires: 2005-08-12
Abstract
Abstract In a fuel cell which has an activated carbon-containing anode and an activated carbon-containing cathode and is preferably used for the oxidative treatment of waste waters containing oxygen or oxygen-containing compounds, the cathode has been subjected to partial anodic oxidation in a mineral acid at a potential ε h of from +1.3 to +10V and then doped with molybdenum(VI) and/or tungsten(VI) and/or vanadium(V) compounds, and the anode has been subjected to partial anodic oxidation in an aqueous mineral acid, cathodically reduced in an aqueous mineral acid and then impregnated with cobalt hydroxide and/or nickel hydroxide and/or copper hydroxide and/or zinc hydroxide, the anode and the cathode being separated by a porous polyelectrolyte through which the waste water flows.
Inventors
- 👤 Wolfgang Habermann
- 👤 Ernst-Heinrich Pommer
- 👤 Peter Hammes
- 👤 Hubert Engelhardt
- 👤 Wolfgang Geiger
- 👤 Werner Simmler
- 👤 Guenther Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C02F1/46114; C02F1/467; C02F1/4672; H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/96; H01M8/00; H01M8/10; H01M8/1009; C02F1/42; C02F2001/46133; C02F2001/46138; C02F2001/46152; C02F2001/46157; C02F2001/46161; C02F2001/46166; C02F2101/00; C02F2101/30; C02F2101/36; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A fuel cell which has an activated carbon-containing anode and an activated carbon-containing cathode and is adapted to be used for the oxidative treatment of waste waters containing oxygen and oxygen-containing compounds, wherein the cathode has been subjected to a partial anodic oxidation in an aqueous mineral acid at a potential ε h of from +1.3 to +10 V and then doped with molybdenum(VI) and/or tungsten(VI) and/or vanadium(V) compounds, and the anode has been subjected to partial anodic oxidation in an aqueous mineral acid, cathodically reduced in an aqueous mineral acid and then impregnated with cobalt hydroxide and/or nickel hydroxide and/or copper hydroxide and/or zinc hydroxide, the anode and the cathode being separated by a porous polyelectrolyte through which the waste water flows.
Claim 2
Dependent Claim
123 words
A fuel cell which has an activated carbon-containing anode and an activated carbon-containing cathode and is adapted to be used for the oxidative treatment of waste waters containing oxygen and oxygen-containing compounds, wherein the cathode has been subjected to a partial anodic oxidation in an aqueous mineral acid at a potential ε h of from +1.3 to +10 V and then doped with molybdenum(VI) and/or tungsten(VI) and/or vanadium(V) compounds, and the anode has been subjected to partial anodic oxidation in an aqueous mineral acid, cathodically reduced in an aqueous mineral acid and then impregnated with cobalt hydroxide and/or nickel hydroxide and/or copper hydroxide and/or zinc hydroxide, the anode and the cathode being separated by a porous polyelectrolyte through which the waste water flows.
Claim 3
Dependent Claim
25 words
A fuel cell as claimed in claim 1, wherein a bed of macroporous ion exchanger granules is used to separate the anode from the cathode.
Claim 4
Dependent Claim
24 words
A fuel cell as claimed in claim 1, wherein the porous polyelectrolyte consists of a mixture of an anion exchanger and a cation exchanger.
Claim 5
Dependent Claim
26 words
A fuel cell as claimed in claim 1, wherein oxygen and/or air or hydrogen peroxide is or are fed to the cathode as an oxidizing agent.
Claim 6
Dependent Claim
16 words
A fuel cell as claimed in claim 1, wherein the anode and the cathode are tubular.
Claim 7
Dependent Claim
23 words
A fuel cell as claimed in claim 5 wherein oxygen reduction cathodes and oxidation anodes dip into a trough of porous polyelectrolyte particles.
References Cited (Backward Citations)
US3619296A
Cited
US3915822A
Cited
US4242421A
Cited
US4202934A
Cited
US4472257A
Cited
US4447505A
Cited
US4445990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |