US4233376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium-lithium alloy
Assignee: Department of National Defence
•
Filing: 1979-01-30
•
Granted: 1980-11-11
•
Expires: 1999-01-30
Abstract
Abstract The invention disclosed is a magnesium-based alloy for use in electrical batteries. The alloys contain 6-13%/w of lithium andexhibits enhanced electrochemical properties. Small amounts of aluminum may be added to the alloys to enhance corrosion resistance.
Inventors
- 👤 James T. N. Atkinson
- 👤 Maheswar Sahoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
C; C22; C22C; C22C23/00; H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12; H01M4/36; H01M4/38; H01M4/46; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
42 words
An electrical battery comprising an anode, a manganese dioxide cathode and an aqueous magnesium perchlorate electrolyte, wherein the anode is made of a magnesium-based alloy, the alloy consisting essentially of 6-13%/w of lithium, 0-1.5%/w of aluminum, the balance being magnesium and impurities.
Claim 2
Dependent Claim
42 words
An electrical battery comprising an anode, a manganese dioxide cathode and an aqueous magnesium perchlorate electrolyte, wherein the anode is made of a magnesium-based alloy, the alloy consisting essentially of 6-13%/w of lithium, 0-1.5%/w of aluminum, the balance being magnesium and impurities.
Claim 3
Dependent Claim
65 words
In an electrical battery comprising a magnesium-containing anode, an aqueous magnesium perchlorate electrolyte and a magnesium dioxide-containing cathode, the improvement wherein said anode is a magnesium-based anode alloy consisting essentially of from about 6 to about 12% by weight of lithium, up to 1.5% by weight of aluminum, the balance being magnesium, said battery exhibiting a high operating voltage and a substantially flat discharge curve.
Claim 4
Dependent Claim
65 words
In an electrical battery comprising a magnesium-containing anode, an aqueous magnesium perchlorate electrolyte and a magnesium dioxide-containing cathode, the improvement wherein said anode is a magnesium-based anode alloy consisting essentially of from about 6 to about 12% by weight of lithium, up to 1.5% by weight of aluminum, the balance being magnesium, said battery exhibiting a high operating voltage and a substantially flat discharge curve.
Claim 5
Dependent Claim
52 words
The electrical battery according to claim 2, wherein said anode consists of from about 86.8 to about 93.99% by weight of magnesium, from about 6 to about 13% by weight of lithium, up to 0.2% by weight of aluminum and impurities in the range of about 0.01 to about 0.20% by weight.
Claim 6
Dependent Claim
26 words
The electrical battery according to claim 1 or 2, wherein the anode contains about 9.5% by weight of lithium and about 0.5% by weight of aluminum.
Claim 7
Dependent Claim
26 words
The electrical battery according to claim 1 or 2, wherein the anode contains about 12% by weight of lithium and about 1.5% by weight of aluminum.
Claim 8
Dependent Claim
32 words
The electrical battery according to claim 6 wherein said anode consists of, weight percent: magnesium: 93.99 to 86.80% lithium: 6 to 13% aluminum: up to 1.0% and other impurities: 0.01 to 0.20%
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |