US4117103A
Expired / Lapsed
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Lithium ion transport compositions
Assignee: Massachusetts Institute of Technology
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Filing: 1977-05-04
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Granted: 1978-09-26
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Expires: 1997-05-04
Abstract
Abstract Fast lithium-ion conductors are provided having low resistivities and low-activation-energy mobilities at temperatures at which lithium salts are molten. The novel compounds promote lithium-ion transport in a three dimensional framework and have the general formula: Li.sub.16-2x D.sub.x (TO).sub.4).sub.4 wherein D is a divalent cation such as Mg 2+ , Zn 2+ , Ca 2+ or mixtures thereof, T is a tetravalent cation such as Si 4+ , Ge 4+ or mixtures thereof and x is a number greater than 0 and less than 4.
Inventors
- 👤 Henry Y-P Hong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0561; H01M10/0562; C; C01; C01B; C01B33/00; C01B33/20; C01G; C01G17/00; C01G17/006; C04; C04B; C04B35/00; C04B35/01; H01M6/00; H01M6/14; H01M6/18; H01M6/185; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
A crystalline compound which promotes fast lithium transport in a three dimensional network having the formula: Li.sub.16-2x D.sub.x (GeO.sub.4).sub.4 wherein D is a divalent cation and x is a number greater than zero and less than 4.
Claim 2
Dependent Claim
37 words
A crystalline compound which promotes fast lithium transport in a three dimensional network having the formula: Li.sub.16-2x D.sub.x (GeO.sub.4).sub.4 wherein D is a divalent cation and x is a number greater than zero and less than 4.
Claim 3
Dependent Claim
10 words
The compound of claim 1 of the formula: Li.sub.14 Zn(GeO.sub.4).sub.4
Claim 4
Dependent Claim
11 words
the compound of claim 1 wherein D is Zn 2+ .
Claim 5
Dependent Claim
11 words
The compound of claim 1 wherein D is Mg 2+ .
Claim 6
Dependent Claim
11 words
The compound of claim 1 wherein D is Ca 2+ .
Claim 7
Dependent Claim
32 words
The compound of claim 1 wherein D is a mixture of at least two of the cations selected form the group consisting of Mg 2+ , Zn 2+ and Ca 2+ .
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |