Patent US4259418A successfully refreshed from Google Patents.
US4259418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrochemical cell with in-situ storage using hydrogen storage electrodes
Assignee: Huntington Alloys Corp
•
Filing: 1979-11-09
•
Granted: 1981-03-31
•
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 07:10
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.
References Cited (Backward Citations)
US4064326A
Cited
US4146446A
Cited
JPS5411450A
Cited
JPS5412581A
Cited
US4128704A
Cited
US4172925A
Cited
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 |