US4181776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemoelectric cell
Assignee: Olle Lindstrom AB
•
Filing: 1978-02-27
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Granted: 1980-01-01
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Expires: 1998-02-27
Abstract
Abstract A chemoelectric cell includes positive and negative electrodes which are spaced to define an interspace therebetween containing electrolyte fluid. At least one of the electrodes is a gas electrode. An electrochemically active substance in the gaseous state is delivered to the interspace so that the interspace serves as both a gas space and an electrolyte space.
Inventors
- 👤 Olle B. Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; H; H01; H01M; H01M12/00; H01M4/00; H01M4/86; H01M8/00; C25B9/01; C25B9/015; H01M6/00; H01M6/42; H01M6/46; H01M6/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
165 words
A chemoelectric cell comprising: a positive electrode, a negative electrode spaced from said positive electrode to define an interspace therebetween for conducting electrolyte, one of said electrodes comprising a gas electrode having one side facing said interspace, a porous separator disposed in said interspace and abutting against said side of said gas electrode, said separator defining passageways open toward said side of said gas electrode for conducting gaseous substance from an inlet end to an outlet end of said interspace; portions of said side of said gas electrode located along said passageways being coated with electrolyte repellant material, means for delivering electrochemically active gaseous substance into said passageways for travel along and reaction with said portions of said side of said gas electrode that are coated by said electrolyte repellant material, and means for delivering liquid electrolyte to said interspace to impregnate said separator so that electrolyte is in contact with areas of said side of said gas electrode which are abutted by said separator.
Claim 2
Dependent Claim
165 words
A chemoelectric cell comprising: a positive electrode, a negative electrode spaced from said positive electrode to define an interspace therebetween for conducting electrolyte, one of said electrodes comprising a gas electrode having one side facing said interspace, a porous separator disposed in said interspace and abutting against said side of said gas electrode, said separator defining passageways open toward said side of said gas electrode for conducting gaseous substance from an inlet end to an outlet end of said interspace; portions of said side of said gas electrode located along said passageways being coated with electrolyte repellant material, means for delivering electrochemically active gaseous substance into said passageways for travel along and reaction with said portions of said side of said gas electrode that are coated by said electrolyte repellant material, and means for delivering liquid electrolyte to said interspace to impregnate said separator so that electrolyte is in contact with areas of said side of said gas electrode which are abutted by said separator.
Claim 3
Dependent Claim
32 words
A chemoelectric cell according to claim 1 wherein the ratio between the areas coated with electrolyte repellant material and the remaining areas of gas electrode surface is in the range of 5-20.
Claim 4
Dependent Claim
33 words
A chemoelectric cell according to claim 1 wherein the average distance for the current path between said electrolyte repellant and remaining areas of the gas electrode is no greater than about 1-2 cm.
Claim 5
Dependent Claim
33 words
A chemoelectric cell according to claim 1 wherein the average distance for the current path between said electrolyte repellant and remaining areas of the gas electrode is no greater than about 0.5-1 cm.
Claim 6
Dependent Claim
16 words
A chemoelectric cell according to claim 4, wherein said distance is within the range 0.2-0.5 cm.
Claim 7
Dependent Claim
22 words
A chemoelectric cell according to claim 1 wherein the negative electrode material is iron and the gas electrode is an air electrode.
Claim 8
Dependent Claim
22 words
A chemoelectric cell according to claim 1 wherein the positive electrode material is zinc and the gas electrode is an air electrode.
Claim 9
Dependent Claim
22 words
A chemoelectric cell according to claim 1 wherein the negative electrode material is cadmium and the gas electrode is an air electrode.
Claim 10
Dependent Claim
22 words
A chemoelectric cell according to claim 1 wherein the negative electrode material is zinc and the gas electrode is a chlorine electrode.
Claim 11
Dependent Claim
23 words
A chemoelectric cell according to claim 1 wherein the negative electrode is a hydrogen electrode and the positive electrode material is nickel oxide.
Claim 12
Dependent Claim
23 words
A chemoelectric cell according to claim 1 wherein the negative electrode is a hydrogen electrode and the positive electrode material is iron oxide.
Claim 13
Dependent Claim
23 words
A chemoelectric cell according to claim 1 wherein the negative electrode is a hydrogen electrode and the positive electrode is an air electrode.
Claim 14
Dependent Claim
23 words
A chemoelectric cell according to claim 1 wherein the negative electrode is a methanol electrode and the positive electrode is an air electrode.
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) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |