US4241150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for control of edge effects of oxidant electrode
Assignee: Energy Development Associates Inc
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Filing: 1979-07-30
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Granted: 1980-12-23
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Expires: 1999-07-30
Abstract
Abstract Described is an electrode assembly comprising; a. a porous electrode having a first and second exterior face with a cavity formed in the interior between said exterior faces thereby having first and second interior faces positioned opposite the first and second exterior faces; b. a counter electrode positioned facing each of the first and second exterior faces of the porous electrode; c. means for passing an oxidant through said porous electrode; and d. screening means for blocking the interior face of the porous electrode a greater amount than the blocking of the respective exterior face of the porous electrode, thereby maintaining a differential of oxidant electrode surface between the interior face and the exterior face. The electrode assembly is useful in a metal, halogen, halogen hydrate electrical energy storage device.
Inventors
- 👤 Peter Carr
- 👤 Chen H. Chi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:50
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; H01M12/00; H01M12/08; H01M12/085; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A method of discharging an electrical energy storage device comprising the steps; 1. providing a first electrode comprised on an electrochemically reducible substance; 2. providing a porous electrode having a first and second exterior face with a cavity formed in the interior between said exterior faces, thereby having first and second interior faces positioned opposite the first and second exterior faces; 3. providing a current carrying electrolyte between said electrodes; 4. passing an oxidant through said porous electrode; 5. screening the porous electrode thereby decreasing its electrochemical activity by blocking the interior face a greater amount than the respective exterior face of the porous electrode, thereby maintaining a differential of electrode surface area between the interior face and the exterior face; and 6. closing the circuit between the first electrode and the porous electrode, thereby oxidizing the substance at the first electrode and reducing the oxidant at the porous electrode.
Claim 2
Independent Claim
150 words
A method of discharging an electrical energy storage device comprising the steps; 1. providing a first electrode comprised on an electrochemically reducible substance; 2. providing a porous electrode having a first and second exterior face with a cavity formed in the interior between said exterior faces, thereby having first and second interior faces positioned opposite the first and second exterior faces; 3. providing a current carrying electrolyte between said electrodes; 4. passing an oxidant through said porous electrode; 5. screening the porous electrode thereby decreasing its electrochemical activity by blocking the interior face a greater amount than the respective exterior face of the porous electrode, thereby maintaining a differential of electrode surface area between the interior face and the exterior face; and 6. closing the circuit between the first electrode and the porous electrode, thereby oxidizing the substance at the first electrode and reducing the oxidant at the porous electrode.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the screening means is a W-shaped plastic material.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein the porous electrode is comprised of a carbonaceous material.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein the porous electrode is comprised of a film forming metal.
Claim 6
Dependent Claim
34 words
The method of claim 1 wherein the differential between the screening of the exterior face and the interior face of the porous electrode ranges from 0.05 in. (1.27 mm) to 0.30 in. (7.62 mm).
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the first electrode is comprised of a metal; and the oxidant is a halogen.
Claim 8
Dependent Claim
18 words
The method of claim 6 wherein the first electrode is comprised of zinc and the oxidant is chlorine.
Claim 9
Dependent Claim
18 words
The method of claim 1 wherein the electrical energy storage device is a metal, halogen, halogen hydrate device.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein the electrolyte is an aqueous electrolyte.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |