US4594299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode article
Assignee: Scimat Ltd
•
Filing: 1984-11-01
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Granted: 1986-06-10
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Expires: 2004-11-01
Abstract
Abstract Electrode material, preferably lithium metal, is protected by a layer of material ready to function as an electrode separator and capable of sufficient ionic conductivity to provide an electrolyte, preferably a solvent-free polymeric electrolyte. The electrode material may be rolled to reduce its thickness while so protected.
Inventors
- 👤 John A. Cook
- 👤 George B. Park
- 👤 Robert H. McLoughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/06; H01M4/36; H01M4/38; H01M4/381; H01M4/382; H01M6/00; H01M6/04; H01M6/06; H01M6/10; H01M6/14; H01M6/18; H01M6/181; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M50/00; H01M50/40; H01M50/46; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49112
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
81 words
An article comprising sensitive electrode material protected by a layer of protective material, the electrode material having been deformed so as to decrease its thickness, thereby substantially increasing its surface area, while in contact with the protective material and the protective material being ready to function as an electrode separator when the article is used to provide an electrode in an electrical device, and being capable of sufficient ionic conductivity to provide an electrolyte when the article is used as aforesaid.
Claim 2
Dependent Claim
81 words
An article comprising sensitive electrode material protected by a layer of protective material, the electrode material having been deformed so as to decrease its thickness, thereby substantially increasing its surface area, while in contact with the protective material and the protective material being ready to function as an electrode separator when the article is used to provide an electrode in an electrical device, and being capable of sufficient ionic conductivity to provide an electrolyte when the article is used as aforesaid.
Claim 3
Dependent Claim
12 words
An article according to claim 1, wherein the protective material is fluid-permeable.
Claim 4
Dependent Claim
19 words
An article according to claim 1, wherein the protective material is adhered to the surface of the electrode material.
Claim 5
Dependent Claim
20 words
An article according to claim 1, wherein the protective material is associated with, but not adhered to, the electrode material.
Claim 6
Dependent Claim
25 words
An article according to claim 1, wherein the protective material is capable of sufficient ionic conductivity to provide electrolyte independent of the action of liquid.
Claim 7
Dependent Claim
43 words
An article according to claim 1, wherein the protective material comprises an inorganic salt dispersed in organic polymer material capable of permitting sufficient transfer of dissociated ions of the salt to provide the required ionic conductivity in the substantial absence of any liquid.
Claim 8
Dependent Claim
13 words
An article according to claim 6 wherein the organic polymer comprises poly(ethylene oxide).
Claim 9
Dependent Claim
33 words
An article according to claim 1, incorporating at least one additional material capable of functioning as another component of the said electrical device in addition to the electrode material and the protective material.
Claim 10
Dependent Claim
32 words
An article according to claim 1, incorporating at least one additional material capable of functioning as a current collector when the article is used to provide an electrode in an electrical device.
Claim 11
Dependent Claim
13 words
An article according to claim 1, wherein the electrode material is continuous metal.
Claim 12
Dependent Claim
19 words
An article according to claim 1, wherein the electrode material is an alkali metal or an alkaline earth metal.
Claim 13
Dependent Claim
13 words
An article according to claim 1, wherein the electrode material is lithium metal.
Claim 14
Dependent Claim
16 words
An article according to claim 1, wherein the electrode material is less than 0.25 millimeters thick.
Claim 15
Dependent Claim
30 words
An article according to claim 1, wherein the protective material has been deformed while in contact with the electrode material so as to enhance its function in the electrical device.
Claim 16
Dependent Claim
19 words
An article according to claim 1, wherein the protective material is overlaid by a removable further layer of material.
Claim 17
Dependent Claim
14 words
An electrode for an electrical device formed from an article according to claim 1.
Claim 18
Dependent Claim
14 words
An electrical device incorporating an electrode formed from an article according to claim 1.
Claim 19
Dependent Claim
25 words
An electrical device incorporating an electrode formed from an article according to claim 1 and incorporating a liquid which permeates the layer of protective material.
Claim 20
Dependent Claim
16 words
An article according to claim 1 wherein the electrode material is less than 0.125 mm thick.
Claim 21
Independent Claim
77 words
A method of preparing an electrode comprising a sensitive electrode material, comprising the steps of: (a) providing said sensitive electrode material; (b) protecting said electrode material by contacting it with a protective material ready to function as an electrode separator and capable of sufficient ionic conductivity to function as an electrolyte; and (c) deforming said electrode material protected by said protective so as to decrease its thickness, thereby substantially increasing the surface area of said electrode material.
Claim 22
Independent Claim
77 words
A method of preparing an electrode comprising a sensitive electrode material, comprising the steps of: (a) providing said sensitive electrode material; (b) protecting said electrode material by contacting it with a protective material ready to function as an electrode separator and capable of sufficient ionic conductivity to function as an electrolyte; and (c) deforming said electrode material protected by said protective so as to decrease its thickness, thereby substantially increasing the surface area of said electrode material.
Claim 23
Dependent Claim
20 words
A method according to claim 20 wherein in said protecting step said electrode material is adhered to said protective material.
Claim 24
Dependent Claim
23 words
A method according to claim 20 wherein in said deforming step the thickness of said electrode material is reduced to below 0.125 mm.
Claim 25
Independent Claim
88 words
A method of preparing an electrical device, comprising the steps of: (a) providing an electrode comprising a sensitive electrode material protected by a protective material ready to function as an electrode separator and capable of sufficient ionic conductivity to function as an electrolyte and said electrode material having been deformed while in contact with said protective material so as to decrease its thickness, thereby substantially increasing the surface area of said electrode material, and (b) incorporating said electrode material protected by said protective material into said electrical device.
Claim 26
Independent Claim
88 words
A method of preparing an electrical device, comprising the steps of: (a) providing an electrode comprising a sensitive electrode material protected by a protective material ready to function as an electrode separator and capable of sufficient ionic conductivity to function as an electrolyte and said electrode material having been deformed while in contact with said protective material so as to decrease its thickness, thereby substantially increasing the surface area of said electrode material, and (b) incorporating said electrode material protected by said protective material into said electrical device.
Claim 27
Dependent Claim
14 words
A method according to claim 23 wherein said electrical device is an electrical cell.
Claim 28
Dependent Claim
18 words
A method according to claim 23 wherein the thickness of said electrode material is less than 0.125 mm.
Claim 29
Dependent Claim
15 words
A method according to claim 20 or 23 wherein said electrode material is lithium metal.
Claim 30
Dependent Claim
22 words
A method according to claim 20 or 23 wherein said protective material comprises an organic polymer having dispersed therein an inorganic salt.
Claim 31
Dependent Claim
15 words
A method according to claim 20 or 23 wherein said organic polymer comprises poly(ethylene oxide).
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |