US4606984A
Expired / Lapsed
US
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Process for stabilizing primary electrochemical generators with reactive anodes made from zinc, aluminium or magnesium and an anode for such a generator stabilized by this process
Assignee: LES PILES Ste
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Filing: 1985-06-27
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Granted: 1986-08-19
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Expires: 2005-06-27
Abstract
Abstract A process is provided for stabilizing a primary electrochemical generator comprising at least one reactive anode made from a metal chosen from the group comprising zinc, aluminium and magnesium, characterized in that to said electrode is added a percentage of 0.01% to 1% by weight with respect to the metal, of at least one perfluorated organic compound of the ethoxylated fluoroalcohol type. It also relates to an anode obtained by the above mentioned process and a primary electrochemical generator, with alkaline or saline electrolyte, comprising an anode of this type.
Inventors
- 👤 Rene Vignaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
Process for stabilizing a primary electrochemical generator comprising at least one reactive anode made from a metal taken from the group consisting of zinc, aluminium and magnesium, characterized in that there is added to said electrode a percentage of 0.01% to 1% by weight with respect to the metal of at least one perfluorated organic compound of the ethoxylated fluoro-alcohol type.
Claim 2
Dependent Claim
61 words
Process for stabilizing a primary electrochemical generator comprising at least one reactive anode made from a metal taken from the group consisting of zinc, aluminium and magnesium, characterized in that there is added to said electrode a percentage of 0.01% to 1% by weight with respect to the metal of at least one perfluorated organic compound of the ethoxylated fluoro-alcohol type.
Claim 3
Dependent Claim
42 words
The stabilization process according to claim 1, characterized in that the anode, being made from zinc, comprises mercury in an amount less than 2% by weight with respect to the zinc, more especially when it is intended for an alkaline electrolyte generator.
Claim 4
Dependent Claim
64 words
The stabilization process according to claim 1 or 2, characterized in that the perfluorated compound corresponds to the formula: C.sub.n F.sub.2n+1 --(CH.sub.2).sub.p --(CH.sub.2 CH.sub.2 O).sub.q --OH (1) in which: n is between 4 and 20, preferably between 6 and 8; p is between 1 and 10 and is preferably close to 2. and q is between 3 and 40, preferably between 10 and 12.
Claim 5
Dependent Claim
33 words
The stabilization process according to claim 3, characterized in that the perfluorated organic compound has the formula: C.sub.6 F.sub.13 C.sub.2 H.sub.4 (C.sub.2 H.sub.4 O).sub.q OH (3) in which q is close to 12.
Claim 6
Dependent Claim
27 words
The stabilization process according to claim 3, characterized in that a mixture of two or more compounds according to the formula (1) of claim 3, are used.
Claim 7
Dependent Claim
40 words
The stabilization process according to claim 5, characterized in that polyfluorated organic is formed by the mixture of the two following compounds: ##STR4## with a mean molecular mass corresponding to the compound: C.sub.7 F.sub.15 C.sub.2 H.sub.4 (C.sub.2 H.sub.4 O).sub.14 OH.
Claim 8
Dependent Claim
64 words
The stabilization process according to claim 1 or 2, characterized in that the perfluorated organic compound corresponds to the formula: C.sub.n F.sub.2n-1 --(CH.sub.2) --(CH.sub.2 CH.sub.2 O) q--OH (2) in which: n is between 4 and 20, preferably between 6 and 8; p is between 1 and 10 and is close to 2; q is between and 3 and 40, preferably between 10 and 12.
Claim 9
Dependent Claim
18 words
The stabilization process according to claim 7, characterized in that the perfluorated compound corresponds to the formula: ##STR5##
Claim 10
Dependent Claim
19 words
An anode for a primary electrochemical generator obtained by the process according to any one of the preceding claims.
Claim 11
Dependent Claim
26 words
A primary electrochemical generator with alkaline electrolyte, characterized in that it comprises an anode according to claim 9, particularly with the limitation according to claim 2.
Claim 12
Dependent Claim
18 words
A primary electrochemical generator with saline electrolyte, characterized in that it comprises an anode according to claim 9.
References Cited (Backward Citations)
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |