US4764438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state tetrachloroaluminate storage battery having a transition metal chloride cathode
Assignee: United States Department of the Air Force
•
Filing: 1985-06-05
•
Granted: 1988-08-16
•
Expires: 2005-06-05
Abstract
Abstract A pelletized, thermally activated, lightweight power source composed of a lithium alloy solid anode, a transition metal chloride-graphite solid cathode and an alkali metal tetrachloroaluminate solid state electrolyte positioned between and in contact with said anode and cathode.
Inventors
- 👤 Robert L. Vaughn
- 👤 Ronald A. Carpio
- 👤 Lowell A. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A method for producing a low power, high energy source of electric current which comprises the steps of: A. providing a solid state electrochemical primary cell containing as essential components: (a) a solid anode composed of an alloy selected from the group consisting of lithium-silicon and lithium-aluminum alloys, (b) a solid cathode of a mixture having a ratio of (1) from about one to five parts by weight of ferric chloride and (2) about one part by weight of graphite, and (c) a solid electrolyte consisting of lithium tetrachloroaluminate salt, said electrolyte positioned between, and, in contact with said anode and said cathode; and B. heating said electrochemical cell to a temperature in a range of from 85° C. to about 105° C. to draw an electric current therefrom while simultaneously maintaining said electrochemical cell in its solid state at a temperature below the melting points of its individual components.
Claim 2
Independent Claim
150 words
A method for producing a low power, high energy source of electric current which comprises the steps of: A. providing a solid state electrochemical primary cell containing as essential components: (a) a solid anode composed of an alloy selected from the group consisting of lithium-silicon and lithium-aluminum alloys, (b) a solid cathode of a mixture having a ratio of (1) from about one to five parts by weight of ferric chloride and (2) about one part by weight of graphite, and (c) a solid electrolyte consisting of lithium tetrachloroaluminate salt, said electrolyte positioned between, and, in contact with said anode and said cathode; and B. heating said electrochemical cell to a temperature in a range of from 85° C. to about 105° C. to draw an electric current therefrom while simultaneously maintaining said electrochemical cell in its solid state at a temperature below the melting points of its individual components.
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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |