US4824744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cell anode
Assignee: Duracell Inc USA
•
Filing: 1986-07-24
•
Granted: 1989-04-25
•
Expires: 2006-07-24
Abstract
Abstract A method of making an anode, for an electrochemical cell, comprising an anode active ductile metal foil such as lithium and a metal foil substrate. To achieve proper adhesion between the metal foil substrate and the active metal foil the metal foil substrate is impressed with indentations, such as with a knurled roller, either when in contact with the active metal foil (with the anode metal foil being indented as well) or prior thereto. In the latter embodiment the active metal foil is compressed onto the indented metal foil substrate.
Inventors
- 👤 Han C. Kuo
- 👤 John J. Andreola
- 👤 Brian J. Bardsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0402; H01M4/0404; H01M4/043; H01M4/0435; H01M4/64; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49112; Y10T29/49114
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
98 words
A method of making an anode, for an electrochemical cell, comprised of an anode active ductile metal foil and an electrically conductive metal foil substrate having a smooth surface, said method comprising the steps of indenting the smooth surface of said metal foil substrate thereby forming indentations therein, compressingly adhering said anode active ductile metal foil to said indented metal foil substrate by pressing portions of said anode active ductile metal foil into said indentations and cutting the adhered anode active metal foil and metal foil substrate to size for use as an anode in said electrochemical cell.
Claim 2
Independent Claim
98 words
A method of making an anode, for an electrochemical cell, comprised of an anode active ductile metal foil and an electrically conductive metal foil substrate having a smooth surface, said method comprising the steps of indenting the smooth surface of said metal foil substrate thereby forming indentations therein, compressingly adhering said anode active ductile metal foil to said indented metal foil substrate by pressing portions of said anode active ductile metal foil into said indentations and cutting the adhered anode active metal foil and metal foil substrate to size for use as an anode in said electrochemical cell.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein said anode active ductile metal foil is comprised of lithium.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said metal foil substrate is indented by compression between knurled rollers.
Claim 5
Dependent Claim
23 words
The method of claim 2 wherein said anode active ductile metal foil is adhered to said metal foil substrate simultaneously with said indenting.
Claim 6
Dependent Claim
24 words
The method of claim 3 wherein said anode active ductile metal foil and said indented metal foil substrate are compressingly adhered between smooth rollers.
Claim 7
Dependent Claim
23 words
The method of claim 4 wherein anode active ductile metal foil layers are compressingly adhered to both sides of said metal foil substrate.
Claim 8
Dependent Claim
24 words
The method of claim 5 wherein anode active ductile metal foil layers are compressingly adhered to both sides of said indented metal foil substrate.
Claim 9
Dependent Claim
16 words
The method of claim 2 wherein said metal foil substrate is comprised of copper or nickel.
Claim 10
Dependent Claim
40 words
The method of claim 2 wherein said metal foil substrate and anode active ductile metal foil are compressingly adhered to a thickness substantially equal to the initial thickness of said metal foil substrate and said anode active ductile metal foil.
Claim 11
Dependent Claim
15 words
An anode for an electrochemical cell made in accordance with the method of claim 1.
Claim 12
Dependent Claim
15 words
An anode for an electrochemical cell made in accordance with the method of claim 2.
Claim 13
Dependent Claim
15 words
An anode for an electrochemical cell made in accordance with the method of claim 8.
Claim 14
Dependent Claim
15 words
An anode for an electrochemical cell made in accordance with the method of claim 9.
Claim 15
Dependent Claim
9 words
An electrochemical cell having the anode of claim 10.
Claim 16
Dependent Claim
9 words
An electrochemical cell having the anode of claim 12.
Claim 17
Dependent Claim
9 words
An electrochemical cell having the anode of claim 13.
References Cited (Backward Citations)
US2955146A
Cited
US3293109A
Cited
US3314820A
Cited
US3425113A
Cited
US3805373A
Cited
US3985574A
Cited
US4150200A
Cited
US3981743A
Cited
US4161815A
Cited
JPS55165576A
Cited
JPS5686463A
Cited
US4342342A
Cited
JPS57128463A
Cited
US4460666A
Cited
EP0092834A1
Cited
US4448861A
Cited
JPH10362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |