US4162202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for improving contact between Li and the anode current collector
Assignee: Duracell Inc USA
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Filing: 1978-01-05
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Granted: 1979-07-24
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Expires: 1998-01-05
Abstract
Abstract An alkali metal anode is compressed on a metal current collector and is adhered thereto by means of a metal which spontaneously alloys with the alkali metal at room temperature.
Inventors
- 👤 Arabinda N. Dey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; C; C23; C23C; C23C26/00; H01M4/36; H01M4/38; H01M4/381; H01M4/64; H01M4/66; H01M4/661; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M4/04; H01M4/0402; H01M4/0404; H01M4/043; H01M4/049; H01M4/0492; H01M4/669; H01M4/70; H01M4/72; H01M4/74; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
A method for adhering a alkali metal to a metallic surface substantially inert to said alkali metal comprising the steps of coating said metallic surface with a layer of a metal which is capable of spontaneously alloying with said alkali metal at ambient temperatures; and applying said solid alkali metal on said coated metallic surface with sufficient pressure to enable said plated metal to alloy with said solid alkali metal.
Claim 2
Independent Claim
70 words
A method for adhering a alkali metal to a metallic surface substantially inert to said alkali metal comprising the steps of coating said metallic surface with a layer of a metal which is capable of spontaneously alloying with said alkali metal at ambient temperatures; and applying said solid alkali metal on said coated metallic surface with sufficient pressure to enable said plated metal to alloy with said solid alkali metal.
Claim 3
Dependent Claim
12 words
A method as in claim 1 wherein said alkali metal is lithium.
Claim 4
Dependent Claim
13 words
A method as in claim 1 wherein said metallic surface is substantially smooth.
Claim 5
Dependent Claim
29 words
A method as in claim 1 wherein said metallic surface is a metal selected from the group consisting of stainless steel, cold rolled steel, nickel, tantalum, titanium and copper.
Claim 6
Dependent Claim
13 words
A method as in claim 1 wherein said coating is applied by electrodeposition.
Claim 7
Dependent Claim
29 words
A method as in claim 1 wherein said layer of metal is selected from the group consisting of mercury, silver, aluminum, cadmium, magnesium, zinc, lead, tin, platinum and gold.
Claim 8
Dependent Claim
23 words
A method as in claim 6 wherein said alkali metal is lithium, said metallic surface is copper and said metallic layer is mercury.
Claim 9
Dependent Claim
22 words
A method as in claim 7 wherein said metallic surface is the surface of an anode current collector in an electrochemical cell.
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) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |