Patent US4080489A successfully refreshed from Google Patents.
US4080489A
Expired / Lapsed
US
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Means for improving contact between Li and the anode current collector
Assignee: Duracell Inc USA
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Filing: 1976-03-08
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Granted: 1978-03-21
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Expires: 1996-03-08
Abstract
Abstract An alkali metal anode compressed on a smooth metal current collector and 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 22:38
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/04; H01M4/0438; H01M4/0469; H01M4/36; H01M4/38; H01M4/381; H01M4/64; H01M50/00; H01M50/10; H01M50/172; H01M6/00; H01M6/14; H01M6/16; H01M6/30; H01M6/32; H01M2004/026; H01M2004/027; H01M4/0402; H01M4/0404; H01M4/049; H01M4/0492; H01M4/66; H01M4/661; H01M4/669; H01M4/70; H01M4/72; H01M4/74; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
An anode for use in a high energy density electrochemical cell, said anode comprising an alkali metal as anode active material compressed on a smooth metallic current collector which comprises a metal which is substantially inert to said alkali metal; and, as an intermediate layer of minimal thickness between said alkali metal and said metallic current collector, an alloy comprising said alkali metal and a metal capable of spontaneously alloying with said alkali metal at room temperature; wherein said alkali metal is adhered to said metallic current collector by means of said alloy.
Claim 2
Dependent Claim
93 words
An anode for use in a high energy density electrochemical cell, said anode comprising an alkali metal as anode active material compressed on a smooth metallic current collector which comprises a metal which is substantially inert to said alkali metal; and, as an intermediate layer of minimal thickness between said alkali metal and said metallic current collector, an alloy comprising said alkali metal and a metal capable of spontaneously alloying with said alkali metal at room temperature; wherein said alkali metal is adhered to said metallic current collector by means of said alloy.
Claim 3
Dependent Claim
12 words
An anode as in claim 1 wherein said alkali metal is lithium.
Claim 4
Dependent Claim
20 words
An anode as in claim 2 wherein said current collector comprises stainless steel and said spontaneously alloying metal is gold.
Claim 5
Dependent Claim
30 words
An anode as in claim 1 wherein said metallic current collector comprises a metal selected from the group consisting of stainless steel, cold rolled steel, nickel, tantalum, titanium and copper.
Claim 6
Dependent Claim
29 words
An anode as in claim 1 wherein said spontaneously alloying metal is selected from the group consisting of mercury, silver, aluminum, cadmium, magnesium, zinc, lead, tin, platinum and gold.
References Cited (Backward Citations)
US3957532A
Cited
US3881951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |