US4888255A
Expired / Lapsed
US
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Non-aqueous electrochemical cell
Assignee: Maxell Ltd
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Filing: 1988-06-24
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Granted: 1989-12-19
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Expires: 2008-06-24
Abstract
Abstract A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with an aromatic compound to prevent voltage drop at the initial stage of discharge.
Inventors
- 👤 Kazumi Yoshimitsu, deceased
- 👤 Shintaro Sekido
- 👤 Kenya Kazehara
- 👤 Kozo Kajita
- 👤 Toshikatsu Manabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:37
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/663; H01M6/00; H01M6/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
92 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a carbocyclic aromatic compound having at least two benzene rings selected from the group consisting of naphthalene, anthracene, pyrene 1,2-benzanthracene, perylene, pentacene, triphenylene, benz(a)-pyrene, 1,2,3,4-dibenzanthracene, 1,2,5,6-dibenzathracene, benz(ghi)perylene and coronene.
Claim 2
Dependent Claim
92 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a carbocyclic aromatic compound having at least two benzene rings selected from the group consisting of naphthalene, anthracene, pyrene 1,2-benzanthracene, perylene, pentacene, triphenylene, benz(a)-pyrene, 1,2,3,4-dibenzanthracene, 1,2,5,6-dibenzathracene, benz(ghi)perylene and coronene.
Claim 3
Dependent Claim
29 words
The cell according to claim 1, wherein the incorporation of the aromatic compound is made to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 4
Dependent Claim
32 words
The cell according to claim 1, wherein the incorporation of the aromatic compound is made into the electrolyte to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 5
Dependent Claim
34 words
The cell according to claim 1, wherein the incorporation of the aromatic compound is made into the collector in an amount of 0.05 to 20% by weight based on the weight of the collector.
Claim 6
Dependent Claim
74 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a chlorinated carbocyclic aromatic compound having at least two benzene rings.
Claim 7
Dependent Claim
74 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a chlorinated carbocyclic aromatic compound having at least two benzene rings.
Claim 8
Dependent Claim
84 words
A non-aqueous electrochemical cell comprising an anode containing an alkali as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxhalide, characterized in that at least one of the electrolyte and the collector is incorporated with an oxygen or sulfur-containing aromatic compound selected from the group consisting of 2,6-di-t-butyl-1,4-benzoquinone, 1,8-naphthalic anhydride, 9,10-anthraquione, benzothiophene, dibenzothiophene, 4-phenylthiophene, thiochroman-4-one and thioxanthen-9-one.
Claim 9
Dependent Claim
84 words
A non-aqueous electrochemical cell comprising an anode containing an alkali as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxhalide, characterized in that at least one of the electrolyte and the collector is incorporated with an oxygen or sulfur-containing aromatic compound selected from the group consisting of 2,6-di-t-butyl-1,4-benzoquinone, 1,8-naphthalic anhydride, 9,10-anthraquione, benzothiophene, dibenzothiophene, 4-phenylthiophene, thiochroman-4-one and thioxanthen-9-one.
Claim 10
Dependent Claim
71 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a chlorinated oxygen or sulfur containing aromatic compound.
Claim 11
Dependent Claim
71 words
A non-aqueous electrochemical cell comprising an anode containing an alkali metal as an essential component of the active anode material, a cathode collector comprising a carbonaceous porous shaped body and a cathode-electrolyte consisting of an ionically conductive solution of a solute in a solvent containing a liquid oxyhalide, characterized in that at least one of the electrolyte and the collector is incorporated with a chlorinated oxygen or sulfur containing aromatic compound.
Claim 12
Dependent Claim
29 words
The cell according to claim 5, wherein the incorporation of the aromatic compound is made to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 13
Dependent Claim
33 words
The cell according to claim 5, wherein the incorporation of the aromatic compound is made into the electrolyte to make a concentration of 1×10 -6 to 1-10 31 2 mol/l in the electrolyte.
Claim 14
Dependent Claim
34 words
The cell according to claim 5, wherein the incorporation of the aromatic compound is made into the collector in an amount of 0.05 to 20% by weight based on the weight of the collector.
Claim 15
Dependent Claim
29 words
The cell according to claim 6, wherein the incorporation of the aromatic compound is made to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 16
Dependent Claim
32 words
The cell according to claim 6, wherein the incorporation of the aromatic compound is made into the electrolyte to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 17
Dependent Claim
34 words
The cell according to claim 6, wherein the incorporation of the aromatic compound is made into the collector in an amount of 0.05 to 20% by weight based on the weight of the collector.
Claim 18
Dependent Claim
29 words
The cell according to claim 7, wherein the incorporation of the aromatic compound is made to make a concentration of 1×10 -6 to 1×10 -2 mol/l in the electrolyte.
Claim 19
Dependent Claim
33 words
The cell according to claim 7, wherein the incorporation of the aromatic compound is made into the electrolyte to make a concentration of 1×10 -6 to 1×10 31 2 mol/l in the electrolyte.
Claim 20
Dependent Claim
34 words
The cell according to claim 7, wherein the incorporation of the aromatic compound is made into the collector in an amount of 0.05 to 20% by weight based on the weight of the collector.
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) | 1992-12-18 | 1993-06-19 | 1993-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-18 | 1997-06-19 | 1997-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-18 | 2001-06-19 | 2001-12-19 | $7700.00 | Window Closed / Lapsed |