US4812376A
Expired / Lapsed
US
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Anode coating for lithium cell
Assignee: Greatbatch Enterprises Inc
•
Filing: 1987-10-15
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Granted: 1989-03-14
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Expires: 2007-10-15
Abstract
Abstract In an alkali metal/halogen or oxyhalide electrochemical cell wherein an alkali metal anode, preferably lithium, has a surface in operative contact with a halogen-containing or oxyhalide cathode/electrolyte including a solvent if necessary, a coating on the anode surface comprising a thin film or substrate material impregnated with organic material, for example organic electron donor material, or other suitable coating material. The substrate material is flexible, preferably a synthetic open mesh fabric material, and the film is prepared by contacting the substrate material with a solution of the organic material and solvent followed by drying. The resulting film is flexible and is applied to the operative surface of the anode thereby coating the same, preferably adhered to the surface by pressing. The flexible film can be applied equally well to anode surfaces which are either smooth and flat or irregular.
Inventors
- 👤 Frank W. Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:01
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
43 words
In an alkali metal-halogen electrochemical cell wherein an alkali metal anode has a surface in operative contact with a solid electrolyte, the improvement comprising: a coating on said anode surface comprising a thin film of substrate material impregnated with organic electron donor material.
Claim 2
Dependent Claim
43 words
In an alkali metal-halogen electrochemical cell wherein an alkali metal anode has a surface in operative contact with a solid electrolyte, the improvement comprising: a coating on said anode surface comprising a thin film of substrate material impregnated with organic electron donor material.
Claim 3
Dependent Claim
13 words
An electrochemical cell according to claim 1, wherein said anode is of lithium.
Claim 4
Dependent Claim
14 words
An electrochemical cell according to claim 1, wherein said substrate is of flexible material.
Claim 5
Dependent Claim
16 words
An electrochemical cell according to claim 1, wherein said substrate is of synthetic open-mesh fabric material.
Claim 6
Dependent Claim
15 words
An electrochemical cell according to claim 1, wherein said substrate is of polyester open-mesh fabric.
Claim 7
Dependent Claim
17 words
An electrochemical cell according to claim 1, wherein said film is adhered to said anode by pressing.
Claim 8
Dependent Claim
22 words
An electrochemical cell according to claim 1, wherein said anode surface is relatively flat and said coating is adhered to said surface.
Claim 9
Dependent Claim
29 words
An electrochemical cell according to claim 1, wherein said anode surface is provided with formations to increase the surface area thereof and said coating is adhered to said surface.
Claim 10
Dependent Claim
21 words
An electrochemical cell according to claim 1, further including a cathode comprising a charge transfer complex formed from iodine and polyvinylpyridine.
Claim 11
Dependent Claim
18 words
An electrochemical cell according to claim 1, wherein said coating is in the form of a unitary body.
Claim 12
Dependent Claim
45 words
In a lithium-halogen electrochemical cell wherein a lithium anode has a surface in operative contact with a solid electrolyte, the improvement comprising: a coating adhered to said lithium anode surface comprising a thin film of synthetic open-mesh fabric material impregnated with organic electron donor material.
Claim 13
Dependent Claim
45 words
In a lithium-halogen electrochemical cell wherein a lithium anode has a surface in operative contact with a solid electrolyte, the improvement comprising: a coating adhered to said lithium anode surface comprising a thin film of synthetic open-mesh fabric material impregnated with organic electron donor material.
Claim 14
Dependent Claim
16 words
An electrochemical cell according to claim 11, wherein said substrate is of polyester open mesh fabric.
Claim 15
Dependent Claim
17 words
An electrochemical cell according to claim 11, wherein said film is pressure-bonded to said lithium anode surface.
Claim 16
Dependent Claim
15 words
An electrochemical cell according to claim 11, wherein said lithium anode surface is relatively flat.
Claim 17
Dependent Claim
22 words
An electrochemical cell according to claim 11, wherein said lithium anode surface is provided with formations to increase the surface area thereof.
Claim 18
Dependent Claim
21 words
An electrochemical cell according to claim 11, further including a cathode comprising a charge transfer complex formed from iodine and polyvinylpyridine.
Claim 19
Dependent Claim
18 words
An electrochemical cell according to claim 11, wherein said coating is in the form of a unitary body.
Claim 20
Dependent Claim
61 words
An anode for an alkali metal-halogen electrochemical cell comprising: (a) an anode body of alkali metal having a surface for operative contact with a solid electrolyte of the cell; (b) anode electrical conductor means operatively associated with said anode body; and (c) a coating on said anode surface comprising a thin film of substrate material impregnated with organic electron donor material.
Claim 21
Dependent Claim
61 words
An anode for an alkali metal-halogen electrochemical cell comprising: (a) an anode body of alkali metal having a surface for operative contact with a solid electrolyte of the cell; (b) anode electrical conductor means operatively associated with said anode body; and (c) a coating on said anode surface comprising a thin film of substrate material impregnated with organic electron donor material.
Claim 22
Dependent Claim
12 words
An anode according to claim 18, wherein said body is of lithium.
Claim 23
Dependent Claim
12 words
An anode according to claim 18, wherein said substrate material is flexible.
Claim 24
Dependent Claim
16 words
An anode according to claim 18, wherein said substrate is of synthetic open mesh fabric material.
Claim 25
Dependent Claim
16 words
An anode according to claim 18, wherein said film is adhered to said anode by pressing.
Claim 26
Dependent Claim
21 words
An anode according to claim 18, wherein said anode surface is relatively flat and said coating is adhered to said surface.
Claim 27
Dependent Claim
28 words
An anode according to claim 18, wherein said anode surface is provided with formations to increase the surface area thereof and said coating is adhered to said surface.
Claim 28
Dependent Claim
17 words
An anode according to claim 18, wherein said coating is in the form of a unitary body.
Claim 29
Dependent Claim
41 words
In an alkali metal-oxyhalide electrochemical cell wherein an alkali metal anode has a surface in operative contact with a liquid cathode/electrolyte, the improvement comprising: a coating on said anode surface comprising a thin film of substrate material impregnated with organic material.
Claim 30
Dependent Claim
41 words
In an alkali metal-oxyhalide electrochemical cell wherein an alkali metal anode has a surface in operative contact with a liquid cathode/electrolyte, the improvement comprising: a coating on said anode surface comprising a thin film of substrate material impregnated with organic material.
Claim 31
Dependent Claim
13 words
An electrochemical cell according to claim 26, wherein said anode is of lithium.
Claim 32
Dependent Claim
14 words
An electrochemical cell according to claim 26, wherein said substrate is of flexible material.
Claim 33
Dependent Claim
14 words
An electrochemical cell according to claim 26, wherein said substrate is of synthetic material.
Claim 34
Dependent Claim
17 words
An electrochemical cell according to claim 26, wherein said film is adhered to said anode by pressing.
Claim 35
Dependent Claim
18 words
An electrochemical cell according to claim 26, wherein said coating is in the form of a unitary body.
Claim 36
Dependent Claim
43 words
In an alkali metal-oxyhalide electrochemical cell wherein a lithium anode has a surface in operative contact with a liquid cathode/electrolyte, the improvement comprising: a coating adhered to said lithium anode surface comprising a thin film of synthetic porous material impregnated with organic material.
Claim 37
Dependent Claim
43 words
In an alkali metal-oxyhalide electrochemical cell wherein a lithium anode has a surface in operative contact with a liquid cathode/electrolyte, the improvement comprising: a coating adhered to said lithium anode surface comprising a thin film of synthetic porous material impregnated with organic material.
Claim 38
Dependent Claim
15 words
An electrochemical cell according to claim 32, wherein said substrate is of glass fiber material.
Claim 39
Dependent Claim
17 words
An electrochemical cell according to claim 32, wherein said film is pressure-bonded to said lithium anode surface.
Claim 40
Dependent Claim
18 words
An electrochemical cell according to claim 32, wherein said coating is in the form of a unitary body.
Claim 41
Dependent Claim
58 words
An anode for alkali metal-oxyhalide electrochemical cell comprising: (a) an anode body of alkali metal having a surface for operative contact with a liquid electrolyte of the cell; (b) anode electrical conductor means operatively associated with said anode body; and (c) a coating on said anode surface comprising a thin film of substrate material impregnated with organic material.
Claim 42
Dependent Claim
58 words
An anode for alkali metal-oxyhalide electrochemical cell comprising: (a) an anode body of alkali metal having a surface for operative contact with a liquid electrolyte of the cell; (b) anode electrical conductor means operatively associated with said anode body; and (c) a coating on said anode surface comprising a thin film of substrate material impregnated with organic material.
Claim 43
Dependent Claim
12 words
An anode according to claim 36, wherein said body is of lithium.
Claim 44
Dependent Claim
12 words
An anode according to claim 36 wherein said substrate material is flexible.
Claim 45
Dependent Claim
14 words
An anode according to claim 36, wherein said substrate is of synthetic porous material.
Claim 46
Dependent Claim
16 words
An anode according to claim 36, wherein said film is adhered to said anode by pressing.
Claim 47
Dependent Claim
17 words
An anode according to claim 36, wherein said coating is in the form of a unitary body.
Claim 48
Independent Claim
49 words
A method of coating the operative surface of an anode for an electrochemical cell containing an alkali metal anode comprising the steps of: (a) providing a thin film of substrate material; (b) impregnating said film with organic material; and (c) applying the impregnated film to said anode operative surface.
Claim 49
Independent Claim
49 words
A method of coating the operative surface of an anode for an electrochemical cell containing an alkali metal anode comprising the steps of: (a) providing a thin film of substrate material; (b) impregnating said film with organic material; and (c) applying the impregnated film to said anode operative surface.
Claim 50
Dependent Claim
12 words
A method according to claim 42, wherein said anode is of lithium.
Claim 51
Dependent Claim
12 words
A method according to claim 42, wherein said substrate material is flexible.
Claim 52
Dependent Claim
15 words
A method according to claim 42, wherein said substrate material is synthetic open mesh fabric.
Claim 53
Dependent Claim
39 words
A method according to claim 42, wherein said step of impregnating said film with organic material comprises dipping said film into a solution of said organic material and solvent, removing said film from said solution, and drying said film.
Claim 54
Dependent Claim
23 words
A method according to claim 42, wherein said step of applying said impregnated film to said anode operative surface is done by pressing.
References Cited (Backward Citations)
US3773557A
Cited
US3957533A
Cited
US3993501A
Cited
US4296185A
Cited
US4182798A
Cited
US4210708A
Cited
US4359818A
Cited
US4398346A
Cited
US4598283A
Cited
US4666799A
Cited
US4608322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |