US4086403A
Expired / Lapsed
US
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Alkali metal/niobium triselenide cell having a dioxolane-based electrolyte
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1976-11-26
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Granted: 1978-04-25
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Expires: 1996-11-26
Abstract
Abstract An improved rechargeable, high energy density electrochemical cell comprising an anode having as its active material an alkali metal, a cathode having as its active material a transition metal trichalcogenide and a nonaqueous electrolyte containing at least one ionizable salt of the anode-active material dissolved in a dioxolane solvent. A specific example is an electrochemical cell with an anode-active material of lithium or alloys thereof, a cathode of niobium triselenide and an electrolyte of lithium perchlorate dissolved in dioxolane.
Inventors
- 👤 M. Stanley Whittingham
- 👤 Gerald H. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:19
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M10/00; H01M10/05; H01M10/052; H01M10/054; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0568; H01M10/0569; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
An electric current-producing cell, comprising: (a) an alkali metal-containing anode; (b) a cathode having as its cathode-active material, one or more trichalcogenides of the formula: MZ.sub.n wherein M is niobium, wherein Z is selenium, and wherein n is a numerical value between about 2.5 and 3.5; and (c) a non-aqueous electrolyte comprising at least one ionic alkali metal salt dissolved in a dioxolane solvent.
Claim 2
Dependent Claim
64 words
An electric current-producing cell, comprising: (a) an alkali metal-containing anode; (b) a cathode having as its cathode-active material, one or more trichalcogenides of the formula: MZ.sub.n wherein M is niobium, wherein Z is selenium, and wherein n is a numerical value between about 2.5 and 3.5; and (c) a non-aqueous electrolyte comprising at least one ionic alkali metal salt dissolved in a dioxolane solvent.
Claim 3
Dependent Claim
17 words
The cell of claim 1 wherein the anode is substantially sodium, lithium, potassium or alloys containing these.
Claim 4
Dependent Claim
15 words
The cell of claim 2 wherein said dioxolane solvent is dioxolane or a solution thereof.
Claim 5
Dependent Claim
24 words
The cell of claim 3 wherein the alkali metal salt in the electrolyte is a salt of the alkali metal contained in the anode.
Claim 6
Dependent Claim
29 words
The cell of claim 4 wherein the anode is substantially sodium, lithium, potassium or alloys containing these, and n is a numerical value between about 2.8 and about 3.2.
Claim 7
Dependent Claim
15 words
The cell of claim 4 wherein the anode is substantially lithium or a lithium alloy.
Claim 8
Dependent Claim
23 words
The cell of claim 6 wherein the lithium salt in the dioxolane solvent has a concentration between about 0.5 and about 3 M/1.
Claim 9
Dependent Claim
12 words
The cell of claim 7 wherein the lithium salt is lithium perchlorate.
Claim 10
Dependent Claim
13 words
The cell of claim 8 wherein the cathode-active material is NbSe 3 .
Claim 11
Dependent Claim
28 words
The cell of claim 4 wherein the electrolyte dioxolane solvent contains at least one diluent selected from the group consisting of straight chain ethers, polyethers, and cyclic ethers.
Claim 12
Dependent Claim
20 words
The cell of claim 10 wherein the electrolyte comprises an ionic lithium salt in a mixture of dioxolane and dimethyoxyethane.
Claim 13
Dependent Claim
28 words
The cell of claim 1 wherein the electrolyte dioxolane solvent contains at least one diluent selected from the group consisting of straight chain ethers, polyethers, and cyclic ethers.
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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |