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US4229509A
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Non-aqueous primary battery having a bismuth (III) sulfide cathode
Assignee: Esb Technology Co
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Filing: 1979-04-09
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Granted: 1980-10-21
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Expires: 1999-04-09
Abstract
Abstract A non-aqueous primary battery comprised of an electrolytic solution of a solvent and a solute, a separator, an anode, and a bismuth (III) sulfide cathode is provided. The electrochemical system of this invention is particularly useful in small primary batteries commonly referred to as "button cells" due to its high volumetric energy density and retention of cell dimensions.
Inventors
- 👤 Nehemiah Margalit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:58
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M6/00; H01M6/14; H01M6/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
57 words
A non-aqueous primary battery having (a) a light metal anode selected from the group consisting of lithium, magnesium, aluminum, beryllium, calcium, sodium, and potassium; (b) an electrolytic solution comprised of an organic solvent and a light inorganic salt dissolved therein; (c) a separator; and (d) a cathode consisting of bismuth (III) sulfide without binder or conductors added.
Claim 2
Dependent Claim
57 words
A non-aqueous primary battery having (a) a light metal anode selected from the group consisting of lithium, magnesium, aluminum, beryllium, calcium, sodium, and potassium; (b) an electrolytic solution comprised of an organic solvent and a light inorganic salt dissolved therein; (c) a separator; and (d) a cathode consisting of bismuth (III) sulfide without binder or conductors added.
Claim 3
Dependent Claim
13 words
The battery of claim 1 in which the light metal anode is lithium.
Claim 4
Dependent Claim
17 words
The battery of claim 1 wherein the inorganic salt contains the same light metal as the anode.
Claim 5
Dependent Claim
24 words
The battery of claim 1 in which concentration of the salt in the electrolytic solution ranges from about 1 molar to about 3 molar.
Claim 6
Dependent Claim
18 words
The battery of claim 3 wherein the salt is a perchlorate, hexafluorophosphate, tetrafluoroborate, tetrachloroaluminate, hexafluoroarsenate, halide or trifluoromethylsulfonate.
Claim 7
Dependent Claim
15 words
The battery of claim 1 wherein the organic solvent is propylene carbonate, 1,2-dimethoxyethane, or gamma-butyrolactone.
References Cited (Backward Citations)
US4085259A
Cited
US4007055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |