US4207391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable electrical storage battery with zinc anode and aqueous alkaline electrolyte
Assignee: El-Chem Corp
•
Filing: 1978-07-25
•
Granted: 1980-06-10
•
Expires: 1998-07-25
Abstract
Abstract A battery system having a zinc containing anode in an alkaline electrolyte produced in a manner to substantially avoid dendritic growth and anode shape change with additives added to the electrolyte and/or anode to assist therein.
Inventors
- 👤 Peter K. Church
- 👤 Alan G. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/24; H01M4/00; H01M4/02; H01M4/24; H01M4/244; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A zinc containing battery anode comprised of finely divided electrochemically oxidized zinc metal particles supported on an electrically conductive current conductor, which particles are electrochemically oxidized in situ by electrically connecting said anode to a cathode immersed in an electrolyte until the cathode is substantially completely discharged as evidenced by the evolution of hydrogen gas therefrom and maintaining the electrical connection between the anode and cathode for a period of time sufficient to oxidize substantially all of the zinc in the anode as evidenced by substantial cessation of hydrogen evolution at the cathode.
Claim 2
Dependent Claim
93 words
A zinc containing battery anode comprised of finely divided electrochemically oxidized zinc metal particles supported on an electrically conductive current conductor, which particles are electrochemically oxidized in situ by electrically connecting said anode to a cathode immersed in an electrolyte until the cathode is substantially completely discharged as evidenced by the evolution of hydrogen gas therefrom and maintaining the electrical connection between the anode and cathode for a period of time sufficient to oxidize substantially all of the zinc in the anode as evidenced by substantial cessation of hydrogen evolution at the cathode.
Claim 3
Dependent Claim
32 words
The anode of claim 1 wherein the zinc anode contains an amount of an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin metal and mixtures thereof.
Claim 4
Dependent Claim
39 words
The anode of claim 1 wherein the zinc anode contains an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin, lead or copper metal, sodium stannate, copper stannate and lead stannate and mixtures thereof.
Claim 5
Dependent Claim
27 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate and containing an alkali soluble manganese compound.
Claim 6
Dependent Claim
27 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate and containing an alkali soluble manganese compound.
Claim 7
Dependent Claim
54 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate wherein the zinc anode contains an amount of an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin metal and mixtures thereof and containing an alkali soluble manganese compound.
Claim 8
Dependent Claim
54 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate wherein the zinc anode contains an amount of an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin metal and mixtures thereof and containing an alkali soluble manganese compound.
Claim 9
Dependent Claim
61 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate wherein the zinc anode contains an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin, lead or copper metal, sodium stannate, cooper stannate and lead stannate and mixtures thereof and containing an alkali soluble manganese compound.
Claim 10
Dependent Claim
61 words
A zinc containing battery anode comprised of finely divided in situ electrochemically oxidized zinc metal particles supported on a substrate wherein the zinc anode contains an additive selected from the group consisting of zinc stannate, potassium stannate, stannic oxide, tin, lead or copper metal, sodium stannate, cooper stannate and lead stannate and mixtures thereof and containing an alkali soluble manganese compound.
References Cited (Backward Citations)
US3451851A
Cited
US3520729A
Cited
US3623911A
Cited
US3930883A
Cited
US3600231A
Cited
US4091178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |