US4390460A
Expired / Lapsed
US
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Lithium oxide based amorphous material and process for preparation thereof
Assignee: Hitachi Ltd
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Filing: 1981-09-28
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Granted: 1983-06-28
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Expires: 2001-09-28
Abstract
Abstract Disclosed is a lithium oxide based amorphous material having a composition included in a region defined by lines connecting points A, B, C and D in the composition diagram of the ternary system of Li2O.SiO2.P2O5 shown in FIG. 1 of the accompanying drawings. This amorphous material can be formed by performing sputtering by using as a target a mixture of a lithium silicate/lithium phosphate composition and LiO2. This amorphous material is excellent in the ionic conductivity.
Inventors
- 👤 Katsuki Miyauchi
- 👤 Tetsu Oi
- 👤 Tsuneo Suganuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:07
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/1514; G02F1/1523; G02F1/1525; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/097; C03C4/00; C03C4/18; H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/185; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
A lithium oxide based amorphous material which has a thickness of 0.1 to 50 μm and which has a composition included in a region defined by lines connecting points A, B, C and D to one another in a composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 shown in FIG. 1 of the accompanying drawings.
Claim 2
Dependent Claim
62 words
A lithium oxide based amorphous material which has a thickness of 0.1 to 50 μm and which has a composition included in a region defined by lines connecting points A, B, C and D to one another in a composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 shown in FIG. 1 of the accompanying drawings.
Claim 3
Dependent Claim
52 words
A lithium oxide based amorphous material as set forth in claim 1, wherein the composition of the amorphous material is included in a region defined by lines connecting points E, F, G and H in said composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 .
Claim 4
Dependent Claim
52 words
A lithium oxide based amorphous material as set forth in claim 1, wherein the composition of the amorphous material is included in a region defined by lines connecting points E, I, J and H in said composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 .
Claim 5
Dependent Claim
153 words
A process for the preparation of lithium oxide based amorphous materials having a thickness of 0.1 to 50 μm and having a composition included in a region defined by lines connecting points A, B, C and D in the composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 shown in FIG. 1 of the accompanying drawings, which comprises performing sputtering by using as a target a mixture comprising a lithium silicate/lithium phosphate composition having a general formula (1-x)Li 4 SiO 4 ·xLi 3 PO 4 where x is a value in the range of 0.05≦x≦0.95 or a mixture capable of forming said lithium silicate/lithium phosphate composition by sputtering and a lithium compound capable of forming Li 2 O by sputtering, said lithium compound being incorporated into said mixture in an amount of 3 to 16 moles as the lithium atom per mole of lithium silicate/lithium phosphate composition.
Claim 6
Dependent Claim
153 words
A process for the preparation of lithium oxide based amorphous materials having a thickness of 0.1 to 50 μm and having a composition included in a region defined by lines connecting points A, B, C and D in the composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 shown in FIG. 1 of the accompanying drawings, which comprises performing sputtering by using as a target a mixture comprising a lithium silicate/lithium phosphate composition having a general formula (1-x)Li 4 SiO 4 ·xLi 3 PO 4 where x is a value in the range of 0.05≦x≦0.95 or a mixture capable of forming said lithium silicate/lithium phosphate composition by sputtering and a lithium compound capable of forming Li 2 O by sputtering, said lithium compound being incorporated into said mixture in an amount of 3 to 16 moles as the lithium atom per mole of lithium silicate/lithium phosphate composition.
Claim 7
Dependent Claim
25 words
A process for the preparation of lithium oxide based amorphous materials according to claim 4, wherein the lithium silicate/lithium phosphate composition in a solid solution.
Claim 8
Dependent Claim
39 words
A process for the preparation of lithium oxide based amorphous materials according to claim 4, wherein the lithium compound is at least one compound selected from the group consisting of Li 2 O, Li 2 CO 3 and LiOH.
Claim 9
Dependent Claim
23 words
A process for the preparation of lithium oxide based amorphous materials according to claim 6, wherein the lithium compound is Li 2 O.
Claim 10
Dependent Claim
25 words
A process for the preparation of lithium oxide based amorphous materials according to claim 6, wherein the lithium compound is Li 2 CO 3 .
Claim 11
Dependent Claim
81 words
A process for the preparation of lithium oxide based amorphous materials according to any one of claims 4, 5, and 6 through 8, wherein x in the above general formula is a value in the range of 0.10≦x≦0.80, and a lithium oxide based amorphous material having a composition included in a region defined by lines connecting points E, F, G and H in said composition diagram of the ternary system of Li 2 O·SiO 2 ·P 2 O 5 is prepared.
References Cited (Backward Citations)
US4184015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |