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US4259418A
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Photoelectrochemical cell with in-situ storage using hydrogen storage electrodes
Assignee: Huntington Alloys Corp
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Filing: 1979-11-09
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Granted: 1981-03-31
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Expires: 1999-11-09
Abstract
Abstract A photoelectrochemical system comprising an n-type photoelectrode, means associated with said photoelectrode for storing charges produced at the interface of the photoelectrode and an electrolyte and a hydrogen storage electrode in contact with a hydrogen-containing electrolyte.
Inventors
- 👤 William D. K. Clark
- 👤 Michael N. Hull
- 👤 John T. Arms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:50
CPC Classifications
H; H01; H01M; H01M14/00; H01M14/005; H01G; H01G9/00; H01G9/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A photoelectrochemical system comprising (a) an n-type photoelectrode; (b) means whereby at least a portion of a surface of said n-type photoelectrode can be illuminated; (c) an electrolyte in contact with said at least a portion of a surface of said n-type photoelectrode; (d) means in said system to store the charges produced by action of light at the interface of said electrolyte and said at least a portion of said surface of said n-type photoelectrode; (e) a hydrogen storage electrode connectable to said n-type photoelectrode by an electronic conductor and through hydrogen-containing electrolyte and comprising a member of the group of metals and intermetallic compounds capable of reacting with hydrogen to form a hydride and hydrides thereof; and (f) means for electrically discharging said hydrogen storage electrode against an electrode energized by charges stored in said storage means.
Claim 2
Dependent Claim
139 words
A photoelectrochemical system comprising (a) an n-type photoelectrode; (b) means whereby at least a portion of a surface of said n-type photoelectrode can be illuminated; (c) an electrolyte in contact with said at least a portion of a surface of said n-type photoelectrode; (d) means in said system to store the charges produced by action of light at the interface of said electrolyte and said at least a portion of said surface of said n-type photoelectrode; (e) a hydrogen storage electrode connectable to said n-type photoelectrode by an electronic conductor and through hydrogen-containing electrolyte and comprising a member of the group of metals and intermetallic compounds capable of reacting with hydrogen to form a hydride and hydrides thereof; and (f) means for electrically discharging said hydrogen storage electrode against an electrode energized by charges stored in said storage means.
Claim 3
Dependent Claim
14 words
A system as in claim 1 wherein said storage means is a redox electrolyte.
Claim 4
Dependent Claim
25 words
A system as in claim 2 wherein said redox electrolyte and an inert electrode constitute an electrode activated by oxidized species in said redox electrolyte.
Claim 5
Dependent Claim
124 words
A photoelectrochemical system comprising (a) an n-type photoelectrode; (b) means whereby at least a portion of a surface of said photoelectrode can be illuminated; (c) an inert counter electrode, both said portion of said surface of said photoelectode and said counter electrode being in contact with (d) a suitable redox electrolyte; (e) a hydrogen storage electrode connectable to said photoelectrode by an electrical conductor and comprising a member of the group of metals and intermetallic compounds capable of reacting with hydrogen to form a hydride and hydrides thereof in contact with (f) a compatible electrolyte, said electrolyte being physically separated from said suitable redox electrolyte by (g) an ion permeable membrane, said hydrogen storage electrode being connectable to said inert electrode through a load.
Claim 6
Dependent Claim
124 words
A photoelectrochemical system comprising (a) an n-type photoelectrode; (b) means whereby at least a portion of a surface of said photoelectrode can be illuminated; (c) an inert counter electrode, both said portion of said surface of said photoelectode and said counter electrode being in contact with (d) a suitable redox electrolyte; (e) a hydrogen storage electrode connectable to said photoelectrode by an electrical conductor and comprising a member of the group of metals and intermetallic compounds capable of reacting with hydrogen to form a hydride and hydrides thereof in contact with (f) a compatible electrolyte, said electrolyte being physically separated from said suitable redox electrolyte by (g) an ion permeable membrane, said hydrogen storage electrode being connectable to said inert electrode through a load.
Claim 7
Dependent Claim
24 words
A photoelectrochemical system as in claim 4 wherein said hydrogen storage electrode comprises a hydride-forming intermetallic compound bonded to an inert current collecting support.
Claim 8
Dependent Claim
32 words
A photoelectrochemical system as in claim 5 wherein said hydride-forming intermetallic compound is selected from the group of LaNi 5 , LaNi 3 Co 2 and LaAl 0 ,3 Ni 4 ,7.
Claim 9
Dependent Claim
31 words
A photoelectrochemical system as in claim 4 wherein said redox electrolyte is an aqueous chalcogenide redox electrolyte and said ion permeable membrane is selective to prohibit transport of the chalcogen ion.
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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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |