US4804595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous electrolytes for lithium batteries
Assignee: Ultralife Corp
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Filing: 1988-01-15
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Granted: 1989-02-14
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Expires: 2008-01-15
Abstract
Abstract An electrochemical cell comprising a lithium anode, a cathode and an electrolyte having a conductivity, in reciprocal ohms per cm (mmho/cm), of at least 3.5 and comprising a lithium salt and 1,2-dimethoxypropane is disclosed.
Inventors
- 👤 Vincent W. Bakos
- 👤 David J. Steklenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:05
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
35 words
An electrochemical cell comprising a lithium anode, a cathode and an electrolyte (a) having a conductivity, and reciprocal ohms per cm, of at least 3.5 in (b) comprising a lithium salt, propylene carbonate and 1,2-dimethoxypropane.
Claim 2
Dependent Claim
35 words
An electrochemical cell comprising a lithium anode, a cathode and an electrolyte (a) having a conductivity, and reciprocal ohms per cm, of at least 3.5 in (b) comprising a lithium salt, propylene carbonate and 1,2-dimethoxypropane.
Claim 3
Dependent Claim
20 words
The electrical cell of claim 1 wherein the volume ratio of 1,2-dimethoxypropane and propylene carbonate varies between 30-60 volume percent.
Claim 4
Dependent Claim
18 words
The electrochemical cell of claim 1 wherein the cathode is selected from MnO 2 and FeS 2 .
Claim 5
Dependent Claim
31 words
The electrochemical cell of claim 3, 1 or 2 wherein the electrolyte comprises 0.5 to 1.5M lithium salt selected from CF 3 SO 3 Li and LiAsF 6 and mixtures thereof.
Claim 6
Dependent Claim
15 words
The electrochemical cell of claim 3, 1 or 2 wherein the volume ratio is 1:1.
Claim 7
Dependent Claim
57 words
An electrochemical cell comprising a lithium anode, a cathode and an electrolyte having a conductivity, in reciprocal ohms per cm (mmho/cm), of at least 3.5, a lithium salt and a solvent mixture comprising (a) 10 to 40 volume percent propylene carbonate; (b) 20 to 40 volume percent ethylene carbonate; and (c) 30 to 60 volume percent 1,2-dimethoxypropane.
Claim 8
Dependent Claim
57 words
An electrochemical cell comprising a lithium anode, a cathode and an electrolyte having a conductivity, in reciprocal ohms per cm (mmho/cm), of at least 3.5, a lithium salt and a solvent mixture comprising (a) 10 to 40 volume percent propylene carbonate; (b) 20 to 40 volume percent ethylene carbonate; and (c) 30 to 60 volume percent 1,2-dimethoxypropane.
Claim 9
Dependent Claim
33 words
The electrochemical cell of claim 6 wherein the solvent mixture comprises (a) 10 to 25 volume percent propylene carbonate; (b) 25 to 40 volume percent ethylene carbonate; and (c) 50 volume percent 1,2-dimethoxypropane.
Claim 10
Dependent Claim
34 words
The electrochemical cell of claim 6 wherein the electrolyte solvent mixture comprises (a) 20 to 25 volume percent propylene carbonate; (b) 25 to 30 volume percent ethylene carbonate; and (c) 50 volume percent 1,2-dimethoxypropane.
Claim 11
Dependent Claim
30 words
The electrochemical cell of claim 6 wherein the electrolyte solvent mixture comprises (a) 30 volume percent propylene carbonate; (b) 30 volume percent ethylene carbonate; and (c) 40 volume percent 1,2-dimethoxypropane.
Claim 12
Dependent Claim
30 words
The electrochemical cell of claim 6 wherein the electrolyte solvent mixture comprises (a) 20 volume percent propylene carbonate; (b) 30 volume percent ethylene carbonate; and (c) 50 volume percent 1,2-dimethoxypropane.
Claim 13
Dependent Claim
23 words
The electrochemical cell of claim 6, 7, 8, 9 or 10 wherein the cathode is selected from FeS 2 and MnO 2 .
Claim 14
Dependent Claim
18 words
The electrochemical cell of claim 6, 7, 8, 9 or 10 wherein the cathode is MnO 2 .
Claim 15
Dependent Claim
33 words
The electrochemical cell of claim 6, 7, 8, 9 or 10 wherein the electrolyte comprises from 0.5 to 1.5M lithium salt selected from CF 3 SO 3 Li, LiAsF 6 and mixtures thereof.
Claim 16
Dependent Claim
23 words
The electrochemical cell of 6, 7, 8, 9 or 10 wherein the electrolyte comprises from 0.5 to 1.5M CF 3 SO 3 Li.
Claim 17
Dependent Claim
23 words
The electrochemical cell of 6, 7, 8, 9 or 10 wherein the electrolyte comprises from 0.5 to 1.5M CF 3 SO 3 Li.
Claim 18
Dependent Claim
22 words
The electrochemical cell of claim 6, 7, 8, 9 or 10 wherein the electrolyte comprises 1 Molar LiCF 3 SO 3 .
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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |