US4070529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid electrolyte
Assignee: Bpifrance Financement SA
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Filing: 1976-07-07
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Granted: 1978-01-24
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Expires: 1996-07-07
Abstract
Abstract The invention relates to lamelliform oxides of high ionic conductivity which contain monovalent elements inserted between lamellae of oxides of the type (L x M 1-x ) O 2 wherein L is a trivalent element, M is a tetravalent element and x is a number between 0 and 1. Such oxides are useful as solid electrolytes in electrochemical generators or cells.
Inventors
- 👤 Claude Delmas
- 👤 Claude Fouassier
- 👤 Paul Hagenmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:11
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/185
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
Lamelliform oxides characterised by the fact that they contain monovalent elements inserted between lamellae of the formula I (l.sub.y M.sub.1-y)O.sub.2 (I) wherein each of the two elements L and M is present in the said lamellae in only one degree of oxidation, the degree of oxidation of L being lower by at least one unit than that of M, the said elements being selected from compounds which either have only one degree of oxidation or have one degree of oxidation which is very stable in the presence of others if more than one exists, y being a number of between 0 and 1.
Claim 2
Dependent Claim
103 words
Lamelliform oxides characterised by the fact that they contain monovalent elements inserted between lamellae of the formula I (l.sub.y M.sub.1-y)O.sub.2 (I) wherein each of the two elements L and M is present in the said lamellae in only one degree of oxidation, the degree of oxidation of L being lower by at least one unit than that of M, the said elements being selected from compounds which either have only one degree of oxidation or have one degree of oxidation which is very stable in the presence of others if more than one exists, y being a number of between 0 and 1.
Claim 3
Dependent Claim
47 words
Lamelliform oxides according to claim 1, characterised by the fact that they correspond to formula II a.sub.x (L.sub.x M.sub.1-x)O.sub.2 (II) wherein A represents a monovalent element and x is a number of between 0 and 1, L is a trivalent element and M is a tetravalent element.
Claim 4
Dependent Claim
29 words
Oxides according to claim 2, characterised by the fact that M is selected from the group comprising zirconium, hafnium and tin and x is a number of about 0.72.
Claim 5
Dependent Claim
23 words
Oxides according to claim 2, characterised by the fact that M represents lead and x has a value between about 0.67 and 0.80.
Claim 6
Dependent Claim
25 words
Oxides according to claim 2, characterised by the fact that L represents one of indium and scandium and A represents one of potassium and rubidium.
Claim 7
Dependent Claim
49 words
Lamelliform oxides according to claim 1, characterised by the fact that they correspond to formula III (a.sub.x-a D.sub.a) (L.sub.x M.sub.1-x)O.sub.2 (III) wherein A, L, M and x have the meaning indicated above and D is a monovalent element different from A, a being a number between 0 and x.
Claim 8
Dependent Claim
35 words
Oxides according to claim 6, characterised by the fact that A represents one of potassium and rubidium, D represents sodium, a is equal to 0.25 and L, M and x have the meaning indicated above.
Claim 9
Dependent Claim
16 words
Process for manufacturing a solid electrolyte comprising using the lamelliform oxide set forth in claim 1.
Claim 10
Dependent Claim
20 words
Electrochemical accumulator such as electrochemical generator or cell, characterised in that it comprises a solid electrolyte according to claim 8.
References Cited (Backward Citations)
US3829331A
Cited
US3980499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |