US4824745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cell comprising a polymeric material film electrode having a collection integrated therewith
Assignee: Bridgestone Corp
•
Filing: 1988-02-22
•
Granted: 1989-04-25
•
Expires: 2008-02-22
Abstract
Abstract In an electrochemical cell comprising a positive electrode, a negative electrode, and an electrolyte, a film of electroconductive polymeric material having a conductor embedded therein at approximately the mid point of the film is used as an electrode active material and a collector associated therewith.
Inventors
- 👤 Masao Ogawa
- 👤 Toyoo Harada
- 👤 Shinichi Toyosawa
- 👤 Isamu Shinoda
- 👤 Takahiro Kawagoe
- 👤 Hideharu Daifuku
- 👤 Yoshitomo Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:30
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0402; H01M4/0404; H01M10/00; H01M10/05; H01M4/0438; H01M4/0464; H01M4/0466; H01M4/13; H01M4/137; H01M4/36; H01M4/60; H01M4/64; H01M4/66; H01M4/669; H01M50/00; H01M50/40; H01M50/409; H01M50/446; H01M50/449; H01M50/451; H01M50/454; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
An electric cell comprising a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, at least one of the active materials being comprised of an electroconductive polymeric material film, a current collector in the form of a conductor embedded in said film at a level between 3/10 and 7/10 of the thickness of said film, and an electrolyte disposed between the electrodes.
Claim 2
Dependent Claim
70 words
An electric cell comprising a positive electrode comprising a positive electrode active material, a negative electrode comprising a negative electrode active material, at least one of the active materials being comprised of an electroconductive polymeric material film, a current collector in the form of a conductor embedded in said film at a level between 3/10 and 7/10 of the thickness of said film, and an electrolyte disposed between the electrodes.
Claim 3
Dependent Claim
36 words
The cell of claim 1 wherein a product prepared by depositing an electroconductive polymeric material on two opposed major surfaces of an electrode by electrolytic polymerization is used to form the active material and the collector.
Claim 4
Dependent Claim
23 words
The cell of claim 1 wherein the electroconductive polymeric material comprises a material obtained by electrolytic polymerization of aniline or a derivative thereof.
Claim 5
Dependent Claim
33 words
The cell of claim 1 wherein the conductor is selected from the group consisting of stainless steel, titanium, carbon, and a composite material having a surface layer of stainless steel, titanium or carbon.
Claim 6
Dependent Claim
21 words
The cell of claim 1 wherein the conductor is a mesh stainless steel containing up to 10% by weight of nickel.
Claim 7
Dependent Claim
64 words
The cell of claim 1 wherein the positive electrode comprises a positive electrode active material in the form of an electroconductive polymeric material film and a positive collector in the form of a conductor embedded in the film, and a negative electrode comprises a negative electrode active material in the form of lithium or a lithium alloy and a negative collector fixedly secured thereto.
Claim 8
Dependent Claim
41 words
The cell of claim 6 wherein the conductor has a peripheral portion extended beyond the film, the exposed peripheral portion of the conductor is fixedly connected to a positive container, and the negative collector is fixedly secured to a negative container.
Claim 9
Dependent Claim
18 words
The cell of claim 1 which further comprises a separator isolating the positive electrode from the negative electrode.
Claim 10
Dependent Claim
29 words
The cell of claim 8 wherein said separator is comprised of a porous film of polypropylene and a nonwoven fabric of glass fiber-filled polypropylene placed one on the other.
Claim 11
Dependent Claim
19 words
The cell of claim 9 wherein the glass fiber-filled polypropylene contains 5 to 60% by weight of glass fibers.
Claim 12
Dependent Claim
59 words
An electric cell comprising a positive electrode comprising an electroconductive polymeric film as the positive electrode; a positive collector in the form of a conductor embeded in said film at a level of between 3/10 and 7/10 of the thickness of said film; a negative electrode comprising a lithium or lithium alloy; and an electrolyte disposed between said electrodes.
Claim 13
Dependent Claim
59 words
An electric cell comprising a positive electrode comprising an electroconductive polymeric film as the positive electrode; a positive collector in the form of a conductor embeded in said film at a level of between 3/10 and 7/10 of the thickness of said film; a negative electrode comprising a lithium or lithium alloy; and an electrolyte disposed between said electrodes.
References Cited (Backward Citations)
US4278745A
Cited
US4560633A
Cited
US4681822A
Cited
US4526708A
Cited
US4584251A
Cited
US4717634A
Cited
US4714665A
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 |