US4345010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolyte for secondary electrochemical cell
Assignee: Congress Financial Corp Florida
•
Filing: 1980-12-22
•
Granted: 1982-08-17
•
Expires: 2000-12-22
Abstract
Abstract An electrolyte solution consisting essentially of butylated hydroxytoluene in an amount of about 1.5% by weight to less than 4% by weight of a solution of 1,3-dioxolane and a lithium salt is used as an electrolyte in a secondary electrochemical cell wherein the active material of one of the electrodes is lithium metal.
Inventors
- 👤 Paul G. Glugla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:13
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
In a secondary electrochemical cell wherein the active material of one of the electrodes is lithium metal, the improvement consisting essentially of an electrolyte solution consisting essentially of 2,5-di-tertiary-butyl hydroxytoluene ranging from about 1.5% by weight to less than 4% by weight of a solution consisting essentially of a 1,3-dioxolane or substituted 1,3-dioxolane, which have the formula: ##STR3## wherein R 1 and R 2 are the same or different and are hydrogen or alkyl of 1-3 carbon atoms and a lithium salt.
Claim 2
Dependent Claim
82 words
In a secondary electrochemical cell wherein the active material of one of the electrodes is lithium metal, the improvement consisting essentially of an electrolyte solution consisting essentially of 2,5-di-tertiary-butyl hydroxytoluene ranging from about 1.5% by weight to less than 4% by weight of a solution consisting essentially of a 1,3-dioxolane or substituted 1,3-dioxolane, which have the formula: ##STR3## wherein R 1 and R 2 are the same or different and are hydrogen or alkyl of 1-3 carbon atoms and a lithium salt.
Claim 3
Dependent Claim
25 words
The secondary cell according to claim 1 wherein said 2,5-di-tertiary-butyl hydroxytoluene is about 2% by weight of said solution of said 1,3-dioxolane and lithium salt.
Claim 4
Dependent Claim
34 words
The secondary cell according to claim 1 wherein the concentration of said lithium salt ranges from about 0.1 mole to about 1.3 mole per liter of said solution of said 1,3-dioxolane and lithium salt.
Claim 5
Dependent Claim
30 words
The secondary electrochemical cell according to claim 3 wherein said concentration of said lithium salt is about 0.5 mole per liter of said solution of said 1,3-dioxolane and lithium salt.
Claim 6
Dependent Claim
47 words
The secondary electrochemical cell according to claim 1 wherein said lithium salt is selected from the group consisting of lithium iodide, lithium bromide, lithium perchlorate, lithium aluminum tetrachloride, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium hexafluorophosphate, lithium tetramethyl borate, lithium methyl sulfonate and lithium oxide aluminum chloride complex salt.
Claim 7
Dependent Claim
15 words
The secondary electrochemical cell according to claim 1 wherein said lithium salt is lithium hexafluoroarsenate.
Claim 8
Dependent Claim
48 words
In a secondary electrochemical cell wherein the active material of one of the electrodes is lithium metal, the improvement consisting essentially of an electrolyte solution consisting essentially of 2,5-ditertiary-butyl hydroxytoluene in an amount of about 2% by weight of a solution consisting essentially of 1,3-dioxolane and lithium hexafluoroarsenate.
Claim 9
Dependent Claim
48 words
In a secondary electrochemical cell wherein the active material of one of the electrodes is lithium metal, the improvement consisting essentially of an electrolyte solution consisting essentially of 2,5-ditertiary-butyl hydroxytoluene in an amount of about 2% by weight of a solution consisting essentially of 1,3-dioxolane and lithium hexafluoroarsenate.
Claim 10
Dependent Claim
31 words
The secondary electrochemical cell according to claim 7 wherein said lithium hexafluoroarsenate is present in an amount of about 0.5 mole per liter of said solution of 1,3-dioxolane and lithium hexafluoroarsenate.
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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |