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US4367268A
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High energy electrochemical power cell
Assignee: United States Department of the Army
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Filing: 1981-05-11
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Granted: 1983-01-04
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Expires: 2001-05-11
Abstract
Abstract An improved high energy electrochemical power cell is obtained by adding cupric chloride to the high surface area carbon black cathode of a lithium-inorganic electrolyte cell.
Inventors
- 👤 Wishvender K. Behl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:09
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/663; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
87 words
In a high energy electrochemical power cell employing lithium as the anode, a solution of a highly soluble lithium salt in an oxychloride solvent as the electrolyte and a high surface area carbon black cathode, the improvement of preparing the cathode by adding cupric chloride to the high surface area carbon black so that the initial cathode composition is a mixture of high surface area carbon black and cupric chloride and incorporating said cathode in the lithium-oxychloride solvent system to reduce cathode polarization at high discharge rates.
Claim 2
Dependent Claim
87 words
In a high energy electrochemical power cell employing lithium as the anode, a solution of a highly soluble lithium salt in an oxychloride solvent as the electrolyte and a high surface area carbon black cathode, the improvement of preparing the cathode by adding cupric chloride to the high surface area carbon black so that the initial cathode composition is a mixture of high surface area carbon black and cupric chloride and incorporating said cathode in the lithium-oxychloride solvent system to reduce cathode polarization at high discharge rates.
Claim 3
Dependent Claim
22 words
A high energy electrochemical power cell according to claim 1 using about 20 to 25 weight percent cupric chloride as the additive.
Claim 4
Dependent Claim
19 words
A high energy electrochemical power cell according to claims 1 or 2 wherein the lithium salt is lithium tetrachloroaluminate.
Claim 5
Dependent Claim
28 words
A high energy electrochemical power cell according to claim 3 wherein the oxychloride solvent is selected from the group consisting of phosphorous oxychloride, thionyl chloride, and sulfuryl chloride.
Claim 6
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 4 wherein the oxychloride solvent is phosphorous oxychloride.
Claim 7
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 4 wherein the oxychloride solvent is thionyl chloride.
Claim 8
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 4 wherein the oxychloride solvent is sulfuryl chloride.
Claim 9
Dependent Claim
32 words
A high energy electrochemical power cell according to claim 4 wherein the high surface area carbon black has a surface area of about 50 m 2 /gm to 1000 m 2 /gm.
Claim 10
Dependent Claim
108 words
In a high energy electrochemical power cell employing lithium as the anode, a solution of lithium tetrachloroaluminate in thionyl chloride as the electrolyte, and a carbon black cathode having a surface are of about 60 m 2 /gm, the improvement of preparing the cathode by adding about 20 to 25 weight percent of cupric chloride to the carbon black so that the initial cathode composition is a mixture of carbon black having a surface area of about 60 m 2 /gm and about 20 to 25 weight percent of cupric chloride and incorporating said cathode in the lithium-oxychloride solvent system to reduce cathode polarization at high discharge rates.
Claim 11
Dependent Claim
108 words
In a high energy electrochemical power cell employing lithium as the anode, a solution of lithium tetrachloroaluminate in thionyl chloride as the electrolyte, and a carbon black cathode having a surface are of about 60 m 2 /gm, the improvement of preparing the cathode by adding about 20 to 25 weight percent of cupric chloride to the carbon black so that the initial cathode composition is a mixture of carbon black having a surface area of about 60 m 2 /gm and about 20 to 25 weight percent of cupric chloride and incorporating said cathode in the lithium-oxychloride solvent system to reduce cathode polarization at high discharge rates.
Claim 12
Dependent Claim
30 words
A high energy electrochemical power cell according to claims 1 or 2 wherein the oxychloride solvent is selected form the group consisting of phosphorous oxychloride, thionyl chloride, and sulfuryl chloride.
Claim 13
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 10 wherein the oxychloride solvent is phosphorous oxychloride.
Claim 14
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 10 wherein the oxychloride solvent is thionyl chloride.
Claim 15
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 10 wherein the oxychloride solvent is sulfuryl chloride.
Claim 16
Dependent Claim
32 words
A high energy electrochemical power cell according to claim 10 wherein the high surface area carbon black has a surface area of about 50 m 2 /gm to 1000 m 2 /gm.
Claim 17
Dependent Claim
34 words
A high energy electrochemical power cell according to claims 1 or 2 wherein the high surface area carbon black has a surface area of about 50 m 2 /gm to 1000 m 2 /gm.
Claim 18
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 15 wherein the lithium salt is lithium tetrachloroaluminate.
Claim 19
Dependent Claim
28 words
A high energy electrochemical power cell according to claim 16 wherein the oxychloride solvent is selected from the group consisting of phosphorous oxychloride, thionyl chloride, and sulfuryl chloride.
Claim 20
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 17 wherein the oxychloride solvent is phosphorous oxychloride.
Claim 21
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 17 wherein the oxychloride solvent is thionyl chloride.
Claim 22
Dependent Claim
17 words
A high energy electrochemical power cell according to claim 17 wherein the oxychloride solvent is sulfuryl chloride.
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 |