US4338180A
Expired / Lapsed
US
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Photoelectrodes for photoelectrochemical cells
Assignee: Kuraray Co Ltd
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Filing: 1980-11-25
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Granted: 1982-07-06
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Expires: 2000-11-25
Abstract
Abstract The present invention provides photoelectrodes for photoelectrochemical cells, which photoelectrodes are essentially composed of a surface-chalcogenated molybdenum or tungsten metal. These photoelectrodes have long life, are highly efficient in energy conversion, and are inexpensive.
Inventors
- 👤 Michihiro Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:37
CPC Classifications
H; H01; H01M; H01M14/00; H01M14/005; H01G; H01G9/00; H01G9/20; H01G9/2027; H01G9/2059; H10; H10K; H10K85/00; H10K85/60; H10K85/649; H10K85/657; H10K30/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/542
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
43 words
A photoelectrode for a photoelectro-chemical cell, which is essentially composed of a surface-chalcogenated molybdenum or tungsten metal, wherein the chalcogenated layer is doped with at least one element selected from Group III b , IV a or IV b of the Periodic Table.
Claim 2
Dependent Claim
43 words
A photoelectrode for a photoelectro-chemical cell, which is essentially composed of a surface-chalcogenated molybdenum or tungsten metal, wherein the chalcogenated layer is doped with at least one element selected from Group III b , IV a or IV b of the Periodic Table.
Claim 3
Dependent Claim
30 words
The photoelectrode of claim 1, wherein the surface thereof contains at least one complex adsorbed thereon and selected from the group consisting of molybdenum complexes, tungsten complexes and ruthenium complexes.
Claim 4
Dependent Claim
141 words
The photoelectrode of claim 1, wherein the surface thereof contains at least one compound adsorbed thereon and represented by the general formula (I) ##STR3## wherein, R 1 , R 2 , R 3 and R 4 are a hydrogen atom or an alkyl group containing 1 to 10 carbon atoms, R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms or an alkoxy group containing 1 to 10 carbon atoms, and X - is an anion, or by the general formula (II) ##STR4## wherein, in formula (II), R 1 , R 2 , R 3 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are as defined with respect to formula (I).
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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |