US5202201A
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Composite element having a titanium chalcogenide or oxychalcogenide layer, more particularly usable as the positive electrode in a thin film electrochemical cell
Assignee: Centre National de la Recherche Scientifique
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Filing: 1989-11-02
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Granted: 1993-04-13
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Expires: 2009-11-02
Abstract
Abstract The invention relates to a composite element usable in an electrochemical generator. The element comprises a substrate (1) covered by cathodic sputtering with a layer (5) of amorphous material TiO a X B with X=S, Se or Te and 0.01<a≦2, 0.01<b≦3, 2≦a+b≦3. The layer (5) consitutes the positive electrode of the generator and it can be associated with a lithium negative electrode (9) and a lithium ion conductive glass electrolyte (7).
Inventors
- 👤 Georges Meunier
- 👤 Richard Dormoy
- 👤 Alain Levasseur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:30
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0561; H01M10/0562; C; C03; C03C; C03C3/00; C03C3/12; C03C3/127; C23; C23C; C23C14/00; C23C14/06; C23C14/0623; H01M10/052; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/64; H01M4/66; H01M4/661; H01M6/00; H01M6/14; H01M6/18; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
Composite element constituted by a substrate coated by cathodic sputtering of a homogeneous, continuous, compact, thin layer of an isotropic, X-ray amorphous material in accordance with the formula: TiO.sub.a X.sub.b in which X represents a sulphur, selenium or tellurium atom and a and b are such that 0.01≦a≦2, 0.01≦b≦2 and 2≦a+b≦3, said coating having a thickness of 200 nm to 10 μm, an amorphous structure and a density lower than that of crystallized TiO 2 or TiS 2 , without surface porosity.
Claim 2
Dependent Claim
82 words
Composite element constituted by a substrate coated by cathodic sputtering of a homogeneous, continuous, compact, thin layer of an isotropic, X-ray amorphous material in accordance with the formula: TiO.sub.a X.sub.b in which X represents a sulphur, selenium or tellurium atom and a and b are such that 0.01≦a≦2, 0.01≦b≦2 and 2≦a+b≦3, said coating having a thickness of 200 nm to 10 μm, an amorphous structure and a density lower than that of crystallized TiO 2 or TiS 2 , without surface porosity.
Claim 3
Dependent Claim
13 words
Element according to claim 1, characterized in that X represents a sulphur atom.
Claim 4
Dependent Claim
39 words
Composite element according to any one of the claims 1 and 2, characterized in that the substrate is an insulating material covered by an electricity conducting material layer on which is deposited the TiO a X b material coating.
Claim 5
Dependent Claim
109 words
Electrochemical cell having a positive electrode, a negative electrode able to release an alkali metal ion or proton and an ionic conductive electrolyte positioned between the two electrodes, characterized in that the positive electrode is formed by a homogenous, continuous, composite, thin coating of isotropic, X-ray-amorphous material, deposited by cathodic sputtering and in accordance with the formula: TiO.sub.a X.sub.b in which X represents S, Se or Te, and a and b are such that 0.01≦a≦2, 0.01≦b≦2 and 2≦a+b≦3, said coating having a thickness of 200 nm to 10 μm, an amorphous structure and a density lower than that of crystallized TiO 2 or TiS 2 , without surface porosity.
Claim 6
Dependent Claim
109 words
Electrochemical cell having a positive electrode, a negative electrode able to release an alkali metal ion or proton and an ionic conductive electrolyte positioned between the two electrodes, characterized in that the positive electrode is formed by a homogenous, continuous, composite, thin coating of isotropic, X-ray-amorphous material, deposited by cathodic sputtering and in accordance with the formula: TiO.sub.a X.sub.b in which X represents S, Se or Te, and a and b are such that 0.01≦a≦2, 0.01≦b≦2 and 2≦a+b≦3, said coating having a thickness of 200 nm to 10 μm, an amorphous structure and a density lower than that of crystallized TiO 2 or TiS 2 , without surface porosity.
Claim 7
Dependent Claim
12 words
Electrochemical cell according to claim 4, characterized in that X represents S.
Claim 8
Dependent Claim
21 words
Electrochemical cell according to any one of the claims 4 and 5, characterized in that the negative electrode is of lithium.
Claim 9
Dependent Claim
17 words
Electrochemical cell according to claim 6, characterized in that the electrolyte is a lithium ion conductive glass.
Claim 10
Dependent Claim
36 words
Electrochemical cell according to claim 7, characterized in that the ionic conductive glass contains in variable proportions B 2 O 3 , Li 2 O, Li r X' with X' representing an anion of valency r.
Claim 11
Dependent Claim
31 words
Electrochemical cell according to any one of the claims 4 and 5, characterized in that the positive electrode is deposited on a substrate having a conductive layer forming a current collector.
Claim 12
Dependent Claim
15 words
Electrochemical cell according to claim 9, characterized in that the current collector is of platinum.
Claim 13
Dependent Claim
17 words
Electrochemical cell according to claim 9, characterized in that the current collector is of transparent conductive glass.
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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) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |