US4356242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode construction for liquid electrolyte electrochemical generators
Assignee: FINANCIERE SORAPEC
•
Filing: 1982-01-11
•
Granted: 1982-10-26
•
Expires: 2002-01-11
Abstract
Abstract The electrode is formed from a permeable thin substrate constituted by an inorganic or organic substance whose porous or fibrous texture is such that the ratio between the effective surface and the boundary surface is large. This substrate is metallized over the entire effective surface, throughout its thickness, in order to constitute a charge collector. On this is then formed, over the entire effective surface, that is to say, throughout the thickness of the substrate, a thin deposit of active electrode material so that neither the porosity of the substrate nor the effective surface are substantially reduced.
Inventors
- 👤 Denis Doniat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/72; H01M4/74; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
105 words
Electrode construction for a liquid electrolyte electrochemical generator, said electrode being formed from a substrate constituted of a non-conducting microporous film, having a porosity at least equal to 50% and a thickness at most equal to about 500 microns, whose pores have a diameter between 3 and 30 microns, all the surfaces of the pores being metallized by at least a first layer, thus forming a charge collector, a thin deposit of active electrode material being deposited on said at least first layer, the total thickness of said at least first layer and of said deposit being such as to avoid clogging of the pores.
Claim 2
Dependent Claim
105 words
Electrode construction for a liquid electrolyte electrochemical generator, said electrode being formed from a substrate constituted of a non-conducting microporous film, having a porosity at least equal to 50% and a thickness at most equal to about 500 microns, whose pores have a diameter between 3 and 30 microns, all the surfaces of the pores being metallized by at least a first layer, thus forming a charge collector, a thin deposit of active electrode material being deposited on said at least first layer, the total thickness of said at least first layer and of said deposit being such as to avoid clogging of the pores.
Claim 3
Dependent Claim
16 words
Electrode construction, according to claim 1, wherein the substrate is a microporous film of polyvinyl chloride.
Claim 4
Dependent Claim
15 words
Electrode construction, according to claim 1, wherein the substrate used is a non-woven fibrous structure.
Claim 5
Dependent Claim
15 words
Electrode construction, according to claim 3, wherein the substrate is a non-woven fibrous nylon structure.
Claim 6
Dependent Claim
14 words
Electrode construction, according to claim 1, wherein the substrate is a woven fibrous structure.
Claim 7
Dependent Claim
15 words
Electrode construction, according to claim 5, wherein the substrate is a woven fibrous nylon structure.
Claim 8
Dependent Claim
21 words
Electrode construction, according to claim 1, wherein the current collector formed by metallization of the substrate is essentially constituted of nickel.
Claim 9
Dependent Claim
30 words
Electrode construction, according to claim 7, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a single deposit of nickel.
Claim 10
Dependent Claim
29 words
Electrode construction, according to claim 7, wherein the current collector is formed over the entire effective surface of the initial substrate throughout its thickness, by a chemically deposited nickel.
Claim 11
Dependent Claim
36 words
Electrode construction, according to claim 7, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by electrochemically deposited nickel, the substrate being itself a conductor of electricity.
Claim 12
Dependent Claim
37 words
Electrode construction, according to claim 7, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a chemical deposit of nickel followed by an electro-chemical deposit of nickel.
Claim 13
Dependent Claim
37 words
Electrode construction, according to claim 7, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a chemical deposit of copper followed by an electro-chemical deposit of nickel.
Claim 14
Dependent Claim
21 words
Electrode construction, according to claim 1, wherein the current collector formed by metallization of the substrate is essentially constituted of copper.
Claim 15
Dependent Claim
30 words
Electrode construction, according to claim 13, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a single deposit of copper.
Claim 16
Dependent Claim
28 words
Electrode construction, according to claim 13, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by chemically deposited copper.
Claim 17
Dependent Claim
38 words
Electrode construction, according to claim 13, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by electrochemically deposited copper, when the substrate is by itself a conductor of electricity.
Claim 18
Dependent Claim
37 words
Electrode construction, according to claim 13, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a chemical deposit of copper followed by an electro-chemical deposit of copper.
Claim 19
Dependent Claim
37 words
Electrode construction, according to claim 13, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by a chemical deposit of nickel followed by an electro-chemical deposit of copper.
Claim 20
Dependent Claim
37 words
Electrode construction, according to claim 1, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by successive deposits of chemical nickel, of electro-chemical copper and finally electro-chemical nickel.
Claim 21
Dependent Claim
38 words
Electrode construction, according to claim 1, wherein the current collector is formed over the entire effective surface of the initial substrate, throughout its thickness, by successive deposits of chemical copper, of electro-chemical copper and finally of electro-chemical nickel.
Claim 22
Dependent Claim
37 words
Electrode construction, according to claim 1, wherein said current collector includes one or more conductive deposits, formed by metallization of said initial substrate, and wherein said initial substrate is then eliminated from the construction by thermal oxidation.
Claim 23
Dependent Claim
24 words
Electrode construction, according to claim 1, wherein the current collector is constituted by one or more metallic deposits, which have undergone an annealing operation.
Claim 24
Dependent Claim
28 words
Electrode construction, according to claim 1, comprising an electrode coating based on nickel oxide or hydroxide formed by electro-chemical deposition of this active material on the current collector.
Claim 25
Dependent Claim
28 words
Electrode construction, according to claim 1, comprising an electrode coating constituted by an electro-chemical deposit of cadmium, the active material of the electrode, formed on the current collector.
References Cited (Backward Citations)
US2834825A
Cited
US3266936A
Cited
US3556855A
Cited
US3560262A
Cited
US3657014A
Cited
US4129692A
Cited
US4121023A
Cited
US4215190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |