US4355086A
Expired / Lapsed
US
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Lithium thionyl chloride battery
Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1981-10-01
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Granted: 1982-10-19
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Expires: 2001-10-01
Abstract
Abstract The discharge rate and internal conductivity of electrochemical cell including a lithium anode, and a cathode and an electrolyte including LiAlCl4 and SOCl2 is improved by the addition of an amount of a mixture containing AlCl3 and Butyl Pyridinium Chloride.
Inventors
- 👤 Deidrich J. Saathoff
- 👤 Hanumanthiya V. Venkatasetty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
In an electrochemical cell having a lithium anode, a cathode and an electrolyte including lithium aluminum chloride and thionyl chloride, the improvement comprising the addition of a mixture of aluminum chloride and n-butyl pyridinium chloride to the electrolyte.
Claim 2
Dependent Claim
38 words
In an electrochemical cell having a lithium anode, a cathode and an electrolyte including lithium aluminum chloride and thionyl chloride, the improvement comprising the addition of a mixture of aluminum chloride and n-butyl pyridinium chloride to the electrolyte.
Claim 3
Dependent Claim
21 words
The electrochemical cell according to claim 1 wherein said mixture of aluminum chloride and n-butyl pyridinium chloride is neutral or acidic.
Claim 4
Dependent Claim
51 words
The electrochemical cell according to claim 1 wherein said electrolyte comprises a solution of between 1.0 and 2.0 M lithium aluminum chloride in thionyl chloride and said mixture of aluminum chloride and n-butyl pyridinium chloride contains a mole ratio of between 1:1 and 2:1 of aluminum chloride to n-butyl pyridinium chloride.
Claim 5
Dependent Claim
12 words
The electrochemical cell according to claim 1 wherein said cathode is carbon.
Claim 6
Dependent Claim
31 words
The electrochemical cell according to claim 2 wherein said mixture of aluminum chloride and n-butyl pyridinium chloride is added to said electrolyte in an amount between 1% and 30% volume addition.
Claim 7
Dependent Claim
31 words
The electrochemical cell according to claim 4 wherein said mixture of aluminum chloride and n-butyl pyridinium chloride is added to said electrolyte in an amount between 1% and 10% volume addition.
Claim 8
Dependent Claim
50 words
The electrochemical cell according to claims 3, 4 or 5 wherein said electrolyte comprises a 1.5 M solution of lithium aluminum chloride in the thionyl chloride and wherein said mixture of aluminum chloride and n-butyl pyridinium chloride contains a mole ratio of 2:1 of aluminum chloride to n-butyl pyridinium chloride.
References Cited (Backward Citations)
US4279973A
Cited
US4307160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |