US4296185A
Expired / Lapsed
US
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Coating for lithium anode, thionyl chloride active cathode electrochemical cell
Assignee: Altus Corp
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Filing: 1980-04-25
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Granted: 1981-10-20
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Expires: 2000-04-25
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
2026-10-26 03:40
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/36; H01M4/38; H01M6/00; H01M6/24; 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
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
An electrochemical cell comprising: (a) a cathode current collector; (b) an anode mechanically spaced from said cathode current collector; (c) an ionically conductive electrolyte in physical contact with said anode and cathode current collector, said electrolyte consisting of a solute dissolved in a solvent that also performs the function of an active cathode depolarizer; (d) a coating contiguous to said anode, said coating consisting of a compound in the cyanoacrylate family.
Claim 2
Dependent Claim
71 words
An electrochemical cell comprising: (a) a cathode current collector; (b) an anode mechanically spaced from said cathode current collector; (c) an ionically conductive electrolyte in physical contact with said anode and cathode current collector, said electrolyte consisting of a solute dissolved in a solvent that also performs the function of an active cathode depolarizer; (d) a coating contiguous to said anode, said coating consisting of a compound in the cyanoacrylate family.
Claim 3
Dependent Claim
11 words
The electrochemical cell of claim 1 wherein said anode is lithium.
Claim 4
Dependent Claim
13 words
The electrochemical cell of claim 2 wherein said electrolyte solvent is thionyl chloride.
Claim 5
Dependent Claim
12 words
The electrochemical cell of claim 3 wherein said solute is lithium tetrachloroaluminate.
Claim 6
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said coating is propyl cyanoacrylate.
Claim 7
Dependent Claim
12 words
The electrochemical cell of claim 1 wherein said coating is isobutyl cyanacrylate.
Claim 8
Dependent Claim
77 words
An electrochemical cell comprising: (a) a cathode current collector; (b) an anode, mechanically spaced from said cathode current collector; (c) a separator located between said anode and said cathode; (d) an ionically conductive electrolyte in physical contact with said anode and cathode current collector, said electrolyte consisting of a solute that also performs the function of active cathode depolarizer; (e) a coating contiguous to said anode, said coating consisting of an organic compound in the cyanoacrylate family.
Claim 9
Dependent Claim
77 words
An electrochemical cell comprising: (a) a cathode current collector; (b) an anode, mechanically spaced from said cathode current collector; (c) a separator located between said anode and said cathode; (d) an ionically conductive electrolyte in physical contact with said anode and cathode current collector, said electrolyte consisting of a solute that also performs the function of active cathode depolarizer; (e) a coating contiguous to said anode, said coating consisting of an organic compound in the cyanoacrylate family.
Claim 10
Dependent Claim
25 words
The electrochemical cell of claim 7 wherein said coating comprises a first film attached to said anode and a second film attached to said separator.
Claim 11
Dependent Claim
14 words
The electrochemical cell of claim 7 wherein said coating is attached to said anode.
Claim 12
Dependent Claim
14 words
The electrochemical cell of claim 7 wherein said coating is attached to said separator.
Claim 13
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) assembly said anode and separator into said cell along with said cathode current collector and electrode.
Claim 14
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) assembly said anode and separator into said cell along with said cathode current collector and electrode.
Claim 15
Dependent Claim
16 words
The method as described in claim 11, said method further characterized by burning in said cell.
Claim 16
Dependent Claim
20 words
The method according to claim 12 wherein said burn is conducted for a period of 24 hours at 50° C.
Claim 17
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 electrolyte 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 18
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 electrolyte 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 19
Dependent Claim
17 words
The method of claim 14 further characterized by the step of burning in said cell after assembly.
Claim 20
Dependent Claim
16 words
The method of claim 15 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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |