US5219680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium rocking-chair rechargeable battery and electrode therefor
Assignee: Ultracell Inc
•
Filing: 1991-07-29
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Granted: 1993-06-15
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Expires: 2011-07-29
Abstract
Abstract A carbon/polymer composite electrode comprising substantially amorphous carbon entrapped in a polymeric matrix, wherein the matrix further entraps an interpenetrating ionically conducting liquid having an alkali metal salt dissolved therein.
Inventors
- 👤 Denis Fauteux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:06
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M10/056; H01M10/0564; H01M10/0565; H01M4/04; H01M4/0438; H01M4/044; H01M4/045; H01M4/13; H01M4/133; H01M4/36; H01M4/362; H01M4/364; H01M4/38; H01M4/381; H01M4/48; H01M4/52; H01M4/525; H01M4/58; H01M4/583; H01M4/60; H01M4/602; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0082; H01M4/0402; H01M4/0404; H01M4/64; H01M4/66; H01M4/661; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
68 words
A carbon/polymer composite electrode comprising carbon entrapped in a polymeric matrix, wherein said carbon is selected from the group consisting of microcrystalline carbon wherein at least about 80% of the carbon microcrystals are in random arrangement and substantially amorphous carbon wherein at least 80% of the carbon is non-crystalline and said matrix further entraps an interpenetrating ionically conducting liquid having an alkali metal or ammonium salt dissolved therein.
Claim 2
Dependent Claim
68 words
A carbon/polymer composite electrode comprising carbon entrapped in a polymeric matrix, wherein said carbon is selected from the group consisting of microcrystalline carbon wherein at least about 80% of the carbon microcrystals are in random arrangement and substantially amorphous carbon wherein at least 80% of the carbon is non-crystalline and said matrix further entraps an interpenetrating ionically conducting liquid having an alkali metal or ammonium salt dissolved therein.
Claim 3
Dependent Claim
12 words
The electrode of claim 1 wherein said carbon is substantially amorphous carbon.
Claim 4
Dependent Claim
16 words
The electrode of claim 2 wherein said ionically conducting liquid is a low volatility aprotic solvent.
Claim 5
Dependent Claim
12 words
The electrode of claim 3 wherein said polymer is a conductive polymer
Claim 6
Dependent Claim
18 words
The electrode of claim 1 wherein said polymer is formed at least in part from polyethylene oxide monomers.
Claim 7
Dependent Claim
23 words
The electrode of claim 5 wherein said ionically conducting liquid is selected from the group consisting of propylene carbonate, gamma-butyrolactone, 1,3-dioxolane, and 2-methyltetrahydrofuran.
Claim 8
Dependent Claim
22 words
The electrode according to claim 2 wherein the substantially amorphous carbon has a surface area greater than about 20 m 2 /g.
Claim 9
Dependent Claim
22 words
The electrode according to claim 7 wherein the substantially amorphous carbon has a surface area greater than about 50 m 2 /g.
Claim 10
Dependent Claim
22 words
The electrode according to claim 2 wherein the substantially amorphous carbon has a particle size diameter of less than about 5 μm.
Claim 11
Dependent Claim
80 words
An electrochemical cell comprising an anode, a cathode, and a polymeric electrolyte wherein said anode comprises carbon entrapped in a polymeric matrix, wherein said carbon is selected from the group consisting of microcrystalline carbon wherein at least about 80% of the carbon microcrystals are in random arrangement and substantially amorphous carbon wherein at least 80% of the carbon is non-crystalline and said matrix further entraps an interpenetrating ionically conducting liquid having an alkali metal or ammonium salt salt dissolved therein.
Claim 12
Dependent Claim
80 words
An electrochemical cell comprising an anode, a cathode, and a polymeric electrolyte wherein said anode comprises carbon entrapped in a polymeric matrix, wherein said carbon is selected from the group consisting of microcrystalline carbon wherein at least about 80% of the carbon microcrystals are in random arrangement and substantially amorphous carbon wherein at least 80% of the carbon is non-crystalline and said matrix further entraps an interpenetrating ionically conducting liquid having an alkali metal or ammonium salt salt dissolved therein.
Claim 13
Dependent Claim
22 words
The electrochemical cell of claim 10 wherein said cathode is a vanadium oxide composition containing intercalated lithium ions or LiCoO 2 .
Claim 14
Dependent Claim
13 words
The electrochemical cell of claim 11 wherein said carbon is substantially amorphous carbon.
Claim 15
Dependent Claim
13 words
The electrochemical cell of claim 12 wherein said anode contains intercalated lithium ions.
Claim 16
Dependent Claim
17 words
The electrochemical cell of claim 13 wherein said ionically conducting liquid is a low volatility aprotic solvent.
Claim 17
Dependent Claim
13 words
The electrochemical cell of claim 14 wherein said polymer is a conductive polymer.
Claim 18
Dependent Claim
24 words
The electrochemical cell of claim 15 wherein said ionically conducting liquid is selected from the group consisting of propylene carbonate, gamma-butyrolactone, 1,3-dioxolane, and 2-methyltetrahydrofuran.
Claim 19
Dependent Claim
19 words
The electrochemical cell of claim 10 wherein said polymer is formed at least in part from polyethylene oxide monomers.
Claim 20
Dependent Claim
23 words
The electrochemical cell according to claim 12 wherein the substantially amorphous carbon has a surface area greater than about 20 m 2 /g.
Claim 21
Dependent Claim
23 words
The electrochemical cell according to claim 18 wherein the substantially amorphous carbon has a surface area greater than about 50 m 2 /g.
Claim 22
Dependent Claim
23 words
The electrochemical cell according to claim 12 wherein the substantially amorphous carbon has a particle size diameter of less than about 5 μm.
Claim 23
Dependent Claim
23 words
The electrode according to claim 2 wherein said substantially amorphous carbon is selected from the group consisting of acetylene black and Shawinigan Black.
Claim 24
Dependent Claim
23 words
The electrode according to claim 12 wherein said substantially amorphous carbon is selected from the group consisting of acetylene black and Shawinigan Black.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |