US4473625A
Expired / Lapsed
US
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Zinc-halogen battery
Assignee: New Energy Development Organization
•
Filing: 1983-04-14
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Granted: 1984-09-25
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Expires: 2003-04-14
Abstract
Abstract A zinc-halogen battery having a negative electrode of zinc electrode, a positive electrode of halogen electrode, and an electrolyte of aqueous solution containing a zinc halide as a main component thereof, which is characterized in that said electrolyte contains Tl and/or Tl compound and further at least one additive selected from the group consisting of Mo, W, Sn, Pb, Bi and the compounds thereof, if necessary, with addition of In and/or In compound.
Inventors
- 👤 Yuichi Watakabe
- 👤 Fumiaki Fujisaki
- 👤 Shunji Shimizu
- 👤 Kunihiko Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A zinc-halogen battery equipped with a zinc electrode as the negative electrode, a halogen electrode as the positive electrode, and an aqueous electrolyte containing zinc halide as the main component, said electrolyte further comprising Tl and/or a Tl compound and at least one additive selected from the group consisting of compounds of the elements: Mo, W, Sn, Pb, and Bi or one of the elements per se.
Claim 2
Dependent Claim
67 words
A zinc-halogen battery equipped with a zinc electrode as the negative electrode, a halogen electrode as the positive electrode, and an aqueous electrolyte containing zinc halide as the main component, said electrolyte further comprising Tl and/or a Tl compound and at least one additive selected from the group consisting of compounds of the elements: Mo, W, Sn, Pb, and Bi or one of the elements per se.
Claim 3
Dependent Claim
15 words
The battery of claim 1, wherein said electrolyte additionally contains In and/or a In compound.
Claim 4
Dependent Claim
19 words
The battery of claim 1, wherein the compounds of the metal additives are the halide, sulfate and nitrate salts.
Claim 5
Dependent Claim
16 words
The battery of claim 2, wherein said In compound is a halide, sulfate or nitrate salt.
Claim 6
Dependent Claim
31 words
The battery of claim 1, wherein any given metal additive or compound thereof is present in the electrolyte in an amount within the range of 10 -5 to 10 -1 mol/l.
Claim 7
Dependent Claim
15 words
The battery of claim 1, wherein said electrolyte further contains sodium halide and/or potassium halide.
Claim 8
Dependent Claim
14 words
The battery of claim 1, wherein said aqueous electrolyte has a pH of 0-5.
Claim 9
Dependent Claim
25 words
The battery of claim 6, wherein said sodium halide or potassium halide is present in said electrolyte in an amount no more than 5 mol/l.
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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |