Patent US4256814A successfully refreshed from Google Patents.
US4256814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectro-chemical cell system
Assignee: Yeda Research and Development Co Ltd
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Filing: 1979-08-21
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Granted: 1981-03-17
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Expires: 1999-08-21
Abstract
Abstract A system comprising a photoelectro-chemical cell for converting light into electrical energy in combination with cooling means for cooling the cell. A method for generating electrical energy with a photoelectro-chemical cell comprising the step of cooling the cell. A method of reducing concentration polarization in photoelectro-chemical cells comprising at least two electrodes and an electrolyte. The method comprises the step of circulating the electrolyte by means of a thermosyphon.
Inventors
- 👤 Yitzhak Avigal
- 👤 David Cahen
- 👤 Gary Hodes
- 👤 Joost Manassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:07
CPC Classifications
H; H01; H01M; H01M14/00; H01M50/00; H01M50/70; H01M50/77; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
29 words
A system comprising a photoelectro-chemical cell containing an electrolyte for converting light into electrical energy, said photoelectro-chemical system further comprising thermosyphon means for circulating said electrolyte throughout said system.
Claim 2
Independent Claim
29 words
A system comprising a photoelectro-chemical cell containing an electrolyte for converting light into electrical energy, said photoelectro-chemical system further comprising thermosyphon means for circulating said electrolyte throughout said system.
Claim 3
Dependent Claim
34 words
The system as defined by claim 1 further comprising heat removal means for removing heat from said electrolyte thereby cooling said electrolyte upon removal of said electrolyte from said cell by said thermosyphon means.
Claim 4
Dependent Claim
29 words
The system as defined by claim 2 wherein said thermosyphon means is adapted to remove said electrolyte from said cell and to return said cooled electrolyte to said cell.
Claim 5
Dependent Claim
22 words
The system as defined by claim 3 wherein said heat removal means comprises a heat exchanger for removing heat from said electrolyte.
Claim 6
Dependent Claim
34 words
The system as defined by claim 3 wherein said thermosyphon means consists of a line through which said electrolyte passes and said heat exchanger, said line being positioned at least partially above said cell.
Claim 7
Dependent Claim
32 words
The system as defined by claim 5 wherein said electrolyte is colored whereby said electrolyte is adapted to collect a high percentage of incident solar radiation as heat while in said cell.
Claim 8
Dependent Claim
17 words
The system as defined by claim 6 wherein said cell further comprises an electrode and a counterelectrode.
Claim 9
Dependent Claim
19 words
The system as defined by claim 7 wherein said heat exchanger is insulated so as to minimize heat losses.
Claim 10
Dependent Claim
27 words
The system as defined by claim 8 wherein said electrode comprises a polycrystalline layer deposited on a metallic base whereby said electrode acts as a dark mirror.
Claim 11
Independent Claim
30 words
A method for generating electrical energy with a photoelectro-chemical cell comprising an electrolyte, said method comprising the step of circulating said electrolyte through said cell by means of a thermosyphon.
Claim 12
Independent Claim
30 words
A method for generating electrical energy with a photoelectro-chemical cell comprising an electrolyte, said method comprising the step of circulating said electrolyte through said cell by means of a thermosyphon.
Claim 13
Dependent Claim
30 words
A method as defined by claim 10 further comprising circulating said electrolyte through and out of said cell, cooling said removed electrolyte, and returning said cooled electrolyte into said cell.
Claim 14
Dependent Claim
30 words
The method as defined by claim 11 further comprising cooling said electrolyte by circulating said removed electrolyte through a heat exchanger wherein said electrolyte releases heat to heat a fluid.
Claim 15
Dependent Claim
17 words
The method as defined by claim 12 further comprising using said heated fluid as an energy source.
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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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |