US4307159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc halogen battery electrolyte compositions with bismuth additive
Assignee: Energy Development Associates Inc
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Filing: 1980-03-28
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Granted: 1981-12-22
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Expires: 2000-03-28
Abstract
Abstract This disclosure relates to a zinc halogen battery electrolyte composition containing an additive providing increased battery capacity. The improved electrolyte composition involves the use of a bismuth additive to inhibit undesirable irregular plating and reduce nodular or dendritic growth on the zinc electrode.
Inventors
- 👤 Michael J. Hammond
- 👤 Patricia H. Schultz
- 👤 Vladimir Feiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:38
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
52 words
An electrolyte composition for use in a metal halogen battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous metal halide solution and bismuth as an additive to said electrolyte in a quantity effective in reducing dendrite formation on said negative electrode.
Claim 2
Dependent Claim
52 words
An electrolyte composition for use in a metal halogen battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous metal halide solution and bismuth as an additive to said electrolyte in a quantity effective in reducing dendrite formation on said negative electrode.
Claim 3
Dependent Claim
52 words
An electrolyte composition for use in a zinc halogen battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous zinc halide solution and bismuth as an additive to said electrolyte in a quantity effective in reducing dendrite formation on said negative electrode.
Claim 4
Dependent Claim
52 words
An electrolyte composition for use in a zinc halogen battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous zinc halide solution and bismuth as an additive to said electrolyte in a quantity effective in reducing dendrite formation on said negative electrode.
Claim 5
Dependent Claim
25 words
An improved zinc halogen battery construction comprising at least one positive electrode and at least one negative electrode and the electrolyte composition of claim 2.
Claim 6
Dependent Claim
54 words
An electrolyte composition for use in a zinc chlorine battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous zinc chloride solution and bismuth as an additive to said electrolyte in an amount from about 50 to about 150 milligrams per liter of electrolyte.
Claim 7
Dependent Claim
54 words
An electrolyte composition for use in a zinc chlorine battery construction having at least one positive electrode and at least one negative electrode, said electrolyte composition comprising an aqueous zinc chloride solution and bismuth as an additive to said electrolyte in an amount from about 50 to about 150 milligrams per liter of electrolyte.
Claim 8
Dependent Claim
27 words
The invention of claim 4 wherein said bismuth is present in said electrolyte in an amount from about 70 to about 80 milligrams per liter of electrolyte.
Claim 9
Dependent Claim
24 words
The invention of claim 4 wherein said bismuth is present in said electrolyte in an amount of about 75 milligrams per liter of electrolyte.
Claim 10
Dependent Claim
25 words
An improved zinc chlorine battery construction comprising at least one positive electrode and at least one negative electrode and the electrolyte composition of claim 4.
Claim 11
Dependent Claim
53 words
An electrolyte composition for use in a zinc chlorine battery construction having at least one positive electrode and at lease one negative electrode, said electrolyte composition comprising an aqueous zinc chloride solution and bismuth as an additive to said eleectrolyte in a quantity effective to increase the charge capacity density of said battery.
Claim 12
Dependent Claim
53 words
An electrolyte composition for use in a zinc chlorine battery construction having at least one positive electrode and at lease one negative electrode, said electrolyte composition comprising an aqueous zinc chloride solution and bismuth as an additive to said eleectrolyte in a quantity effective to increase the charge capacity density of said battery.
Claim 13
Dependent Claim
27 words
The invention of claim 8 wherein said bismuth is present in said electrolyte in an amount from about 50 to about 150 milligrams per liter of electrolyte.
References Cited (Backward Citations)
US3713888A
Cited
US3793079A
Cited
US3811946A
Cited
US3881958A
Cited
US3953302A
Cited
US3993502A
Cited
US4001036A
Cited
US4144381A
Cited
US4181777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |