US5168019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonaqueous electrolyte secondary battery
Assignee: Sony Corp
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Filing: 1992-03-12
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Granted: 1992-12-01
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Expires: 2012-03-12
Abstract
Abstract A nonaqueous electrolyte secondary battery includes a cathode of a carbon material that can be doped or undoped with lithium, an anode of a primary active material composed of a composite oxide of lithium and cobalt, the cathode and the anode being disposed in a casing. LiPF6 is dissolved in a solvent of propylene carbonate and 1,2-dimethoxyethane, and a powder of Al2O3 is dispersed in the solution. The dispersion is poured as an electrolytic solution in the casing.
Inventors
- 👤 Naoyuki Sugeno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:34
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0567; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
A nonaqueous electrolyte secondary battery comprising: a casing; a cathode disposed in said casing, said cathode being made of a carbon material that can be doped or undoped with lithium; an anode disposed in said casing, said anode being made of a primary active material composed of a composite oxide of lithium and cobalt; an electrolytic solution accommodated in said casing, said electrolytic solution being composed of an organic solvent with an electrolyte of a fluoride added thereto; and an additive added to said electrolytic solution, said additive comprising at least one oxide selected from the group consisting of Al 2 O 3 , BaO, and MgO.
Claim 2
Dependent Claim
107 words
A nonaqueous electrolyte secondary battery comprising: a casing; a cathode disposed in said casing, said cathode being made of a carbon material that can be doped or undoped with lithium; an anode disposed in said casing, said anode being made of a primary active material composed of a composite oxide of lithium and cobalt; an electrolytic solution accommodated in said casing, said electrolytic solution being composed of an organic solvent with an electrolyte of a fluoride added thereto; and an additive added to said electrolytic solution, said additive comprising at least one oxide selected from the group consisting of Al 2 O 3 , BaO, and MgO.
Claim 3
Dependent Claim
29 words
A nonaqueous electrolyte secondary battery according to claim 1, wherein said fluoride is selected from the group consisting of LiPF 6 , LiAsF 6 , and LiBF 4 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |