US3985574A
Expired / Lapsed
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Electrochemical elements in thin layers
Assignee: Alcatel Lucent SAS
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Filing: 1975-07-24
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Granted: 1976-10-12
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Expires: 1995-07-24
Abstract
Abstract Electrochemical elements in thin layers comprising a stack of thin layers, successively a cooper layer, a catholyte, a separator, a lithium layer, the catholyte and the separator being formed by a gel comprising more particularly formal or polyvinylic butyral, reticulated or otherwise and impregnated with a solvent such as propylene carbonate or N-methyl-pyrrolidone saturated with an ionically conductive salt such as ammonium perchlorate. A variant consists in forming the separator with a gel of reticulated polymer basically containing polyvinylidene fluoride and a mineral charge such as magnesia.
Inventors
- 👤 Georges Feuillade
- 👤 Bernard Chenaux
- 👤 Philippe Perche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/22; H01M6/14; H01M6/16; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M50/00; H01M50/40; H01M50/489
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
95 words
Electrochemical element of the type comprising successively, a first thin layer constituting an electronically conductive cathode collector, a second thin layer forming a catholyte comprising a substance suitable for providing anions capable of forming, with the substance of an anode, a discharge product, a third thin layer forming a separator impermeable to the said catholyte and a fourth thin anode layer comprising lithium, characterized in that the said catholyte as well as the said separator comprise partly a gel formed by a polyvinylic acetal impregnated with at least a solvent and an ionically conductive salt.
Claim 2
Dependent Claim
95 words
Electrochemical element of the type comprising successively, a first thin layer constituting an electronically conductive cathode collector, a second thin layer forming a catholyte comprising a substance suitable for providing anions capable of forming, with the substance of an anode, a discharge product, a third thin layer forming a separator impermeable to the said catholyte and a fourth thin anode layer comprising lithium, characterized in that the said catholyte as well as the said separator comprise partly a gel formed by a polyvinylic acetal impregnated with at least a solvent and an ionically conductive salt.
Claim 3
Dependent Claim
120 words
Electrochemical element of the type comprising successively, a first thin layer constituting an electronically conductive cathode collector, a second thin layer forming a catholyte comprising a substance suitable for providing anions capable of forming, with the substance of an anode, a discharge product, a third thin layer forming a separator which is impermeable to the said catholyte and a fourth thin anode layer comprising lithium, characterized in that the said catholyte, as well as the said separator comprise partly a gel impregnated with at least a solvent as well as with an ionically conductive salt, the gel forming the said catholyte comprising a polyvinylic acetal, the gel forming the said separator comprising a polymer as well as a mineral charge.
Claim 4
Dependent Claim
120 words
Electrochemical element of the type comprising successively, a first thin layer constituting an electronically conductive cathode collector, a second thin layer forming a catholyte comprising a substance suitable for providing anions capable of forming, with the substance of an anode, a discharge product, a third thin layer forming a separator which is impermeable to the said catholyte and a fourth thin anode layer comprising lithium, characterized in that the said catholyte, as well as the said separator comprise partly a gel impregnated with at least a solvent as well as with an ionically conductive salt, the gel forming the said catholyte comprising a polyvinylic acetal, the gel forming the said separator comprising a polymer as well as a mineral charge.
Claim 5
Dependent Claim
15 words
Element according to claim 1, characterized in that the said polyvinylic acetal is polyvinylic formal.
Claim 6
Dependent Claim
15 words
Element according to claim 1, characterized in that the said polyvinylic acetal is polyvinylic butyral.
Claim 7
Dependent Claim
14 words
Element according to claim 1, characterized in that the said solvent is propylene carbonate.
Claim 8
Dependent Claim
13 words
Element according to claim 1, characterized in that the said solvent is N-methylpyrrolidone.
Claim 9
Dependent Claim
16 words
Element according to claim 1, characterized in that the said ionically conductive salt is ammonium perchlorate.
Claim 10
Dependent Claim
16 words
Element according to claim 1, characterized in that the said ionically conductive salt is potassium iodide.
Claim 11
Dependent Claim
16 words
Element according to claim 1, characterized in that the said ionically conductive salt is sodium fluoborate.
Claim 12
Dependent Claim
16 words
Element according to claim 1, characterized in that the said ionically conductive salt is lithium perchlorate.
Claim 13
Dependent Claim
19 words
Element according to claim 1, characterized in that the said polymer is a copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 14
Dependent Claim
14 words
Element according to claim 1, characterized in that the said polymer is vinylidene polyfluoride.
Claim 15
Dependent Claim
17 words
Element according to claim 1, characterized in that the said polyvinylic acetal is of the non-reticulated type.
Claim 16
Dependent Claim
17 words
Element according to claim 1, characterized in that the said polyvinylic acetal is of the reticulated type.
Claim 17
Dependent Claim
20 words
Element according to claim 14, characterized in that the reticulation agent of the said acetal is a solution of epichlorhydrine.
Claim 18
Dependent Claim
21 words
Element according to claim 14, characterized in that the reticulation agent of the said acetal is a solution of isopropyl titanate.
Claim 19
Dependent Claim
20 words
Element according to claim 14, characterized in that the reticulation agent of the said acetal is a solution of dimethylolurea.
Claim 20
Dependent Claim
59 words
Element according to claim 15, characterized in that the said reticulation agent is a solution in a solvant called a reticulation solvent, chosen from among the group constituted by ethanol, tetrahydrofurane, the said propylene carbonate and the said N-methyl-pyrrolidone and in a proportion of 5 to 10% by weight in relation to the weight of the polyvinylic acetal substantially.
Claim 21
Dependent Claim
16 words
Element according to claim 2, characterized in that the said polymer is of the reticulated type.
Claim 22
Dependent Claim
14 words
Element according to claim 19, characterized in that the said polymer is N-N' Dicinnamylidene-1.6-hexanediamine.
Claim 23
Dependent Claim
18 words
Element according to claim 19, characterized in that reticulation agent of the said polymer is an organic peroxyde.
Claim 24
Dependent Claim
14 words
Element according to claim 2, characterized in that the said mineral charge comprises magnesia.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |