US5478676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current collector having a conductive primer layer
Assignee: Image Products Group LLC
•
Filing: 1994-08-02
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Granted: 1995-12-26
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Expires: 2014-08-02
Abstract
Abstract A current collector which uses a conductive primer layer under an electrode layer to improve the contact and adhesion of the electrode layer to a supporting member, wherein the conductive primer layer is composed of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent, and a conductive filler. The current collector may be used inter alia for making batteries.
Inventors
- 👤 Eran Turi
- 👤 Marie B. Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/665; H01M4/667; H01M4/668; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
54 words
A current collector comprising: a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a conductive filler; and an electrode layer adhered to said primer layer.
Claim 2
Dependent Claim
54 words
A current collector comprising: a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a conductive filler; and an electrode layer adhered to said primer layer.
Claim 3
Dependent Claim
22 words
The current collector according to claim 1 wherein the polymeric material having pendant carboxylic acid groups is an acrylic polymer or copolymer.
Claim 4
Dependent Claim
15 words
The current collector according to claim 2 wherein the acrylic copolymer is an ethylene/acrylic copolymer.
Claim 5
Dependent Claim
25 words
The current collector according to claim 3 wherein the multifunctional crosslinking agent is a multifunctional aziridinyl crosslinking agent and the conductive filler is carbon black.
Claim 6
Dependent Claim
18 words
The current collector according to claim 1 wherein the multifunctional crosslinking agent is a multifunctional aziridinyl crosslinking agent.
Claim 7
Dependent Claim
42 words
The current collector according to claim 1 further comprising an additional layer applied over said primer layer and under said electrode layer, the additional layer consisting essentially of a non crosslinked polymeric material having pendant carboxylic acid groups and a conductive filler.
Claim 8
Dependent Claim
20 words
The current collector according to claim 6 wherein the second polymeric material is a polymer or copolymer of acrylic acid.
Claim 9
Dependent Claim
34 words
The current collector in accordance with claim 1 wherein the conductive filler is selected from the group consisting of: carbon black, graphite, graphite fibers, graphite fibrils, metal coated particles, metal particles and combinations thereof.
Claim 10
Dependent Claim
42 words
The current collector according to claim 1 further comprising an additional layer applied under said primer layer and over said conductive support, the additional layer consisting essentially of a non crosslinked polymeric material having pendant carboxylic acid groups and a conductive filler.
Claim 11
Dependent Claim
15 words
The current collector in accordance with claim 1 wherein the conductive support is a metal.
Claim 12
Dependent Claim
16 words
The current collector in accordance with claim 1 wherein the conductive support is a conductive foil.
Claim 13
Dependent Claim
17 words
The current collector in accordance with claim 1 wherein the conductive support is a conductive plastic film.
Claim 14
Dependent Claim
25 words
The current collector in accordance with claim 12 wherein the conductive plastic film has been rendered conductive by the application of the primer layer thereon.
Claim 15
Dependent Claim
19 words
The current collector in accordance with claim 12 wherein the conductive plastic film is a self supporting primer layer.
Claim 16
Dependent Claim
17 words
The current collector in accordance with claim 12 wherein the conductive film is a metalized plastic film.
Claim 17
Dependent Claim
17 words
A current collector in accordance with claim 1 wherein the primer layer is a self supporting layer.
Claim 18
Dependent Claim
18 words
A current collector in accordance with claim 1 wherein the primer layer also includes a non conductive filler.
Claim 19
Dependent Claim
19 words
The current collector according to claim 1 wherein the polymeric material having pendant carboxylic acid groups is a polyurethane.
Claim 20
Dependent Claim
71 words
A current collector comprising: a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a conductive filler; a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a resin selected from the group consisting of polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane, and combinations thereof; and an electrode layer adhered to said primer layer.
Claim 21
Dependent Claim
71 words
A current collector comprising: a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a conductive filler; a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a resin selected from the group consisting of polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane, and combinations thereof; and an electrode layer adhered to said primer layer.
Claim 22
Dependent Claim
18 words
The current collector according to claim 19 wherein the multifunctional crosslinking agent is a multifunctional aziridinyl crosslinking agent.
Claim 23
Dependent Claim
34 words
The current collector in accordance with claim 19 wherein the conductive filler is selected from the group consisting of: carbon black, graphite, graphite fibers, graphite fibrils, metal coated particles, metal particles and combinations thereof.
Claim 24
Dependent Claim
51 words
The current collector according to claim 19 further comprising an additional layer applied over said primer layer and under said electrode layer, the additional layer consisting essentially of a non crosslinked polymeric material having pendant carboxylic acid groups, polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane and combinations thereof, and a conductive filler.
Claim 25
Dependent Claim
48 words
The current collector according to claim 19 further comprising an additional layer applied under said primer layer and over said conductive support, the additional layer consisting essentially of a non crosslinked polymeric material having pendant carboxylic acid groups, polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane, and a conductive filler.
Claim 26
Dependent Claim
15 words
The current collector in accordance with claim 19 wherein the conductive support is a metal.
Claim 27
Dependent Claim
16 words
The current collector in accordance with claim 19 wherein the conductive support is a conductive foil.
Claim 28
Dependent Claim
17 words
The current collector in accordance with claim 19 wherein the conductive foils is a metalized plastic film.
Claim 29
Dependent Claim
17 words
A current collector in accordance with claim 19 wherein the primer layer is a self supporting layer.
Claim 30
Dependent Claim
18 words
A current collector in accordance with claim 19 wherein the primer layer also includes a non conductive filler.
Claim 31
Dependent Claim
34 words
The current collector according to claim 19 wherein the polymeric material having pendant carboxylic acid groups is an acrylic polymer having pendant carboxylic acid groups, or an acrylic copolymer having pendant carboxylic acid groups.
Claim 32
Dependent Claim
16 words
The current collector according to claim 29 wherein the acrylic copolymer is an ethylene/acrylic acid copolymer.
Claim 33
Dependent Claim
102 words
A battery comprising a casing, an electrolyte within said casing, an anode and a cathode electrode in contact with said electrolyte wherein at least one current collector in said casing comprises a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a conductive filler; a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a resin selected from the group consisting of polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane, and combinations thereof; and wherein said anode or cathode electrode is adhered to said primer layer.
Claim 34
Dependent Claim
102 words
A battery comprising a casing, an electrolyte within said casing, an anode and a cathode electrode in contact with said electrolyte wherein at least one current collector in said casing comprises a conductive support, a conductive primer layer applied thereon, said conductive primer layer comprising a conductive filler; a crosslinked polymeric material which is the result of a polymeric material having pendant carboxylic acid groups crosslinked with a multifunctional crosslinking agent; and a resin selected from the group consisting of polyolefins, polyvinylidene fluoride, polytetrafluoroethylene, a polyurethane, and combinations thereof; and wherein said anode or cathode electrode is adhered to said primer layer.
Claim 35
Dependent Claim
15 words
The battery in accordance with claim 31 wherein the casing is also the conductive support.
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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) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-25 | 2003-06-26 | 2003-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-25 | 2007-06-26 | 2007-12-26 | $7700.00 | Window Closed / Lapsed |