Patent US1547339A successfully refreshed from Google Patents.
Patent US5240786A successfully refreshed from Google Patents.
US5240786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated fuel cell components
Assignee: Gas Technology Institute
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Filing: 1992-03-13
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Granted: 1993-08-31
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Expires: 2012-03-13
Abstract
Abstract An assembly of fuel cell components comprising a matrix tape having an active area and a peripheral wet seal area, an anode and/or a cathode in contact with a face of the matrix tape, the anode and cathode extending beyond a periphery of the active area of the matrix tape and contacting the peripheral wet seal area, and a portion of the peripheral wet seal area forming a frame around the anode and cathode to prevent gas crossover between the electrodes during cell operation and to prevent oxidation of the edges of the electrodes.
Inventors
- 👤 Estela T. Ong
- 👤 Leonard G. Marianowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:53
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/141; H01M8/142; H01M8/02; H01M8/0271; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911; Y10T29/49114
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
140 words
An assembly of fuel cell components comprising: a composite active electrolyte-matrix tape comprising an active electrolyte distributed within and upon a matrix and having an active area and a peripheral wet seal area; at least one of an anode in contact with a face of said composite active electrolyte-matrix tape and a cathode in contact with an opposite face of said composite active electrolyte-matrix tape, said anode and said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area and said composite active electrolyte-matrix tape between said anode and said cathode being densified; and a portion of said peripheral wet seal area forming a frame around said anode and said cathode whereby an electrode face of said anode and said cathode facing away from said composite active electrolyte-matrix tape is flush with said frame.
Claim 2
Dependent Claim
140 words
An assembly of fuel cell components comprising: a composite active electrolyte-matrix tape comprising an active electrolyte distributed within and upon a matrix and having an active area and a peripheral wet seal area; at least one of an anode in contact with a face of said composite active electrolyte-matrix tape and a cathode in contact with an opposite face of said composite active electrolyte-matrix tape, said anode and said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area and said composite active electrolyte-matrix tape between said anode and said cathode being densified; and a portion of said peripheral wet seal area forming a frame around said anode and said cathode whereby an electrode face of said anode and said cathode facing away from said composite active electrolyte-matrix tape is flush with said frame.
Claim 3
Dependent Claim
39 words
An assembly of fuel cell components in accordance with claim 1, wherein said composite active electrolyte-matrix tape comprises a mixture of lithium carbonate and at least one carbonate selected from the group consisting of potassium carbonate and sodium carbonate.
Claim 4
Dependent Claim
17 words
An assembly of fuel cell components in accordance with claim 1, wherein said matrix comprises lithium aluminate.
Claim 5
Dependent Claim
25 words
An assembly of fuel cell components in accordance with claim 1, wherein said composite active electrolyte-matrix tape is about 20 to about 120 mils thick.
Claim 6
Dependent Claim
30 words
An assembly of fuel cell components in accordance with claim 1, wherein said composite active electrolyte-matrix tape is densified by a compaction force of about 10 to about 50 psi.
Claim 7
Dependent Claim
31 words
An assembly of fuel cell components in accordance with claim 1, wherein a tape periphery of said composite active electrolyte-matrix tape is equivalent to a cell periphery of a fuel cell.
Claim 8
Dependent Claim
27 words
An assembly of fuel cell components in accordance with claim 1, wherein said anode and said cathode have a thickness of about 5 to about 50 mils.
Claim 9
Dependent Claim
107 words
An assembly of fuel cell component comprising: a matrix tape having an active area and a peripheral wet seal area; at least one of an anode in contact with a face of said matrix tape and a cathode in contact with an opposite face of said matrix tape, said anode and said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area; and a portion of said peripheral wet seal area forming a frame around said anode and said cathode whereby an electrode face of said anode and said cathode facing away from said matrix tape is flush with said frame.
Claim 10
Dependent Claim
107 words
An assembly of fuel cell component comprising: a matrix tape having an active area and a peripheral wet seal area; at least one of an anode in contact with a face of said matrix tape and a cathode in contact with an opposite face of said matrix tape, said anode and said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area; and a portion of said peripheral wet seal area forming a frame around said anode and said cathode whereby an electrode face of said anode and said cathode facing away from said matrix tape is flush with said frame.
Claim 11
Dependent Claim
17 words
An assembly of fuel cell components in accordance with claim 8, wherein said matrix comprises lithium aluminate.
Claim 12
Dependent Claim
25 words
An assembly of fuel cell components in accordance with claim 8, wherein said anode and said cathode are porous structures impregnated with an active electrolyte.
Claim 13
Dependent Claim
37 words
An assembly of fuel cell components in accordance with claim 10, wherein said active electrolyte comprises a mixture of lithium carbonate and at least one carbonate selected from the group consisting of potassium carbonate and sodium carbonate.
Claim 14
Dependent Claim
28 words
An assembly of fuel cell components in accordance with claim 8, wherein said matrix tape is densified by a compaction force of about 10 to about 50 psi.
Claim 15
Dependent Claim
29 words
An assembly of fuel cell components in accordance with claim 8, wherein a tape periphery of said matrix tape is equivalent to a cell periphery of a fuel cell.
Claim 16
Dependent Claim
135 words
A process for making a laminated fuel cell component comprising: placing at least one of an anode adjacent one side of a composite active electrolyte-matrix tape having an active area and a peripheral wet seal area and a cathode adjacent the opposite side of said composite active electrolyte-matrix tape, said anode and/or said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area, forming a laminate; heating said laminate to a temperature of about 400° C. to about 650° C.; applying a compaction force to said laminate until said anode and/or said cathode are flush with a portion of said peripheral wet seal area, said portion of said wet seal area forming a frame around said anode and/or said cathode; and releasing said compaction force and cooling said laminate.
Claim 17
Dependent Claim
135 words
A process for making a laminated fuel cell component comprising: placing at least one of an anode adjacent one side of a composite active electrolyte-matrix tape having an active area and a peripheral wet seal area and a cathode adjacent the opposite side of said composite active electrolyte-matrix tape, said anode and/or said cathode extending beyond a periphery of said active area and contacting said peripheral wet seal area, forming a laminate; heating said laminate to a temperature of about 400° C. to about 650° C.; applying a compaction force to said laminate until said anode and/or said cathode are flush with a portion of said peripheral wet seal area, said portion of said wet seal area forming a frame around said anode and/or said cathode; and releasing said compaction force and cooling said laminate.
Claim 18
Dependent Claim
24 words
A process in accordance with claim 14, wherein a binder is removed from said composite active electrolyte-matrix tape during said heating of said laminate.
Claim 19
Dependent Claim
19 words
A process in accordance with claim 14, wherein said compaction force is between about 10 to about 50 psi.
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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) | 1996-08-30 | 1997-03-01 | 1997-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-30 | 2001-03-01 | 2001-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-30 | 2005-03-01 | 2005-08-31 | $7700.00 | Window Closed / Lapsed |