US4469760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redox battery including a bromine positive electrode and a chromium ion negative electrode, and method
Assignee: Electric Power Research Institute
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Filing: 1981-09-08
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Granted: 1984-09-04
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Expires: 2001-09-08
Abstract
Abstract A redox flow battery with a positive half-cell compartment containing bromide ion, bromine and a complexing organic liquid for bromine, and a negative electrode half-cell compartment containing chromium ion, and including electrolyte fluid communication therebetween.
Inventors
- 👤 Jose D. Giner
- 👤 Herbert H. Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:03
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/18; H01M8/184; H01M10/00; H01M10/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
A redox flow battery comprising the combination of a redox reaction type of positive electrode half-cell compartment and a redox type of negative electrode half-cell compartment, with electrolyte fluid communication therebetween, said positive electrode and negative electrode half-cell compartments being separated from each other by an anionic permselective membrane, said positive half-cell compartment containing an aqueous electrolyte including bromide ion, bromine, and a complexing organic liquid for bromine, and said negative electrode half-cell compartment containing an aqueous solution of chromium ion capable of the following redox reaction: ##EQU3##
Claim 2
Dependent Claim
88 words
A redox flow battery comprising the combination of a redox reaction type of positive electrode half-cell compartment and a redox type of negative electrode half-cell compartment, with electrolyte fluid communication therebetween, said positive electrode and negative electrode half-cell compartments being separated from each other by an anionic permselective membrane, said positive half-cell compartment containing an aqueous electrolyte including bromide ion, bromine, and a complexing organic liquid for bromine, and said negative electrode half-cell compartment containing an aqueous solution of chromium ion capable of the following redox reaction: ##EQU3##
Claim 3
Dependent Claim
41 words
The battery of claim 1 together with storage means for said bromine-containing complexing organic liquid and means to transfer the bromine between the complexing organic liquid and the positive half-cell aqueous electrolyte for reaction at the electrode of said positive half-cell.
Claim 4
Dependent Claim
17 words
The battery of claim 1 in which said positive half-cell is capable of the following reaction: ##EQU4##
Claim 5
Dependent Claim
17 words
The battery of claim 1 in which said positive half-cell is capable of the following reaction: ##EQU5##
Claim 6
Dependent Claim
80 words
In a battery comprising a redox positive half-cell containing an aqueous solution containing bromide ion, bromine and a bromine complexing organic liquid and a redox negative half-cell containing chromium ion, said positive and negative half-cell being separated from each other by an anionic permselective membrane, the steps of (a) periodically charging and discharging the positive half-cell compartment according to the following redox reaction: ##EQU6## (b) periodically charging and discharging the negative half-cell compartment according to the following redox reaction: ##EQU7##
Claim 7
Dependent Claim
80 words
In a battery comprising a redox positive half-cell containing an aqueous solution containing bromide ion, bromine and a bromine complexing organic liquid and a redox negative half-cell containing chromium ion, said positive and negative half-cell being separated from each other by an anionic permselective membrane, the steps of (a) periodically charging and discharging the positive half-cell compartment according to the following redox reaction: ##EQU6## (b) periodically charging and discharging the negative half-cell compartment according to the following redox reaction: ##EQU7##
Claim 8
Dependent Claim
80 words
In a battery comprising a redox positive half-cell containing an aqueous solution with bromide ion, bromine and a bromine complexing organic liquid and a redox negative half-cell containing chromium ion, said positive and negative half-cell being separated from each other by an anionic permselective membrane, the steps of (a) periodically charging and discharging the positive half-cell compartment according to the following redox reaction: ##EQU8## (b) periodically charging and discharging the negative half-cell compartment according to the following redox reaction: ##EQU9##
Claim 9
Dependent Claim
80 words
In a battery comprising a redox positive half-cell containing an aqueous solution with bromide ion, bromine and a bromine complexing organic liquid and a redox negative half-cell containing chromium ion, said positive and negative half-cell being separated from each other by an anionic permselective membrane, the steps of (a) periodically charging and discharging the positive half-cell compartment according to the following redox reaction: ##EQU8## (b) periodically charging and discharging the negative half-cell compartment according to the following redox reaction: ##EQU9##
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |