US4366616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for lithium anode, thionyl chloride active cathode electrochemical cell
Assignee: Altus Corp
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Filing: 1980-10-17
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Granted: 1983-01-04
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Expires: 2000-10-17
Abstract
Abstract Electrochemical power cells having a cathode current collector, a combination liquid active cathode depolarizer electrolyte solvent and an anode that forms surface compounds when in intimate contact with the liquid cathode are enhanced by the addition of a passivation limiting film contiguous to said anode. The passivating film is a member of the cyanoacrilate family of organic compounds.
Inventors
- 👤 Vincent O. Catanzarite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:07
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/36; H01M4/38; H01M6/00; H01M6/14; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M4/40; H01M4/405; H01M50/00; H01M50/40; H01M50/46; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
In a method of reducing passivation in an electrochemical cell having a lithium anode, a cathode current collector spaced from said anode, a separator located between said anode and cathode, and an ionically conductive electrolyte consisting of a solution of ionically conductive solute dissolved in thionyl chloride; the steps comprising: (a) prior to assembly, coating said anode with a liquid compound that cures to an adherent film, said compound chosen from the cyanoacrylate family; (b) prior to assembly, coating said separator with said liquid compound; (c) curing said liquid compound to form an adherent film on said anode and separator; (d) assembling said anode and separator into said cell along with said cathode current collector and electrode.
Claim 2
Dependent Claim
117 words
In a method of reducing passivation in an electrochemical cell having a lithium anode, a cathode current collector spaced from said anode, a separator located between said anode and cathode, and an ionically conductive electrolyte consisting of a solution of ionically conductive solute dissolved in thionyl chloride; the steps comprising: (a) prior to assembly, coating said anode with a liquid compound that cures to an adherent film, said compound chosen from the cyanoacrylate family; (b) prior to assembly, coating said separator with said liquid compound; (c) curing said liquid compound to form an adherent film on said anode and separator; (d) assembling said anode and separator into said cell along with said cathode current collector and electrode.
Claim 3
Dependent Claim
16 words
The method as described in claim 1, said method further characterized by burning in said cell.
Claim 4
Dependent Claim
20 words
The method according to claim 2 wherein said burn is conducted for a period of 24 hours at 50° C..
Claim 5
Dependent Claim
78 words
In a method of reducing passivation in an electrochemical cell having a lithium anode, a cathode current collector spaced from said anode, a separator located between said anode and said cathode current collector, and electroylte consisting of an ionically conductive solute dissolved in thionyl chloride; the steps comprising: (a) prior to assembly, locating a cyanoacrilate sheet adjacent to said anode (b) assembling said anode and cyanoacrilate sheet into said cell along with said cathode current collector and electrolyte.
Claim 6
Dependent Claim
78 words
In a method of reducing passivation in an electrochemical cell having a lithium anode, a cathode current collector spaced from said anode, a separator located between said anode and said cathode current collector, and electroylte consisting of an ionically conductive solute dissolved in thionyl chloride; the steps comprising: (a) prior to assembly, locating a cyanoacrilate sheet adjacent to said anode (b) assembling said anode and cyanoacrilate sheet into said cell along with said cathode current collector and electrolyte.
Claim 7
Dependent Claim
17 words
The method of claim 4 further characterized by the step of burning in said cell after assembly.
Claim 8
Dependent Claim
16 words
The method of claim 5 wherein said burning is conducted at 50° C. for 24 hours.
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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |