US4983470A
Expired / Lapsed
US
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Protective material for molten carbonate fuel cell
Assignee: Mitsubishi Electric Corp
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Filing: 1990-02-28
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Granted: 1991-01-08
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Expires: 2010-02-28
Abstract
Abstract A protective material for a molten carbonate fuel cell, which comprises a ceramic comprising an oxide material capable of chemically reacting with an electrolyte used in the molten carbonate fuel cell for generating electric energy by consuming hydrogen formed from a raw fuel such as hydrocarbons, or with a substance formed from the electrolyte. The protective material protects a reforming catalyst or component materials of the fuel cell power generation system from the electrolyte or the substance formed from the electrolyte.
Inventors
- 👤 Hiroshi Kimura
- 👤 Kazunao Sato
- 👤 Mitsuie Matsumura
- 👤 Chika Hirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/06; H01M8/0606; H01M8/0612; H01M8/0625; H01M8/02; H01M8/14; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M8/24; H01M8/249; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
78 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material including at least one substance having a melting point lower than the temperature at which the fuel cell is used.
Claim 2
Dependent Claim
78 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material including at least one substance having a melting point lower than the temperature at which the fuel cell is used.
Claim 3
Dependent Claim
21 words
A molten carbonate fuel cell as set forth in claim 1 wherein the oxide material is in the form of pellets.
Claim 4
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 1 wherein the oxide material comprises TiO 2 and B 2 O 3 .
Claim 5
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 1 wherein the oxide material comprises SiO 2 and B 2 O 3 .
Claim 6
Dependent Claim
27 words
A molten carbonate fuel cell as set forth in claim 1 wherein the oxide material comprises TiO 2 , SiO 2 and B 2 O 3 .
Claim 7
Dependent Claim
20 words
A molten carbonate fuel cell as set forth in claim 1 wherein said components comprise at least a reforming catalyst.
Claim 8
Dependent Claim
83 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material including B 2 O 3 and at least one of TiO 2 , SiO 2 , MoO 3 , WO 3 , ZrO 2 , and GeO 2 .
Claim 9
Dependent Claim
83 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material including B 2 O 3 and at least one of TiO 2 , SiO 2 , MoO 3 , WO 3 , ZrO 2 , and GeO 2 .
Claim 10
Dependent Claim
21 words
A molten carbonate fuel cell as set forth in claim 7 wherein the oxide material is in the form of pellets.
Claim 11
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 7 wherein the oxide material comprises TiO 2 and B 2 O 3 .
Claim 12
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 7 wherein the oxide material comprises SiO 2 and B 2 O 3 .
Claim 13
Dependent Claim
27 words
A molten carbonate fuel cell as set forth in claim 7 wherein the oxide material comprises TiO 2 , SiO 2 and B 2 O 3 .
Claim 14
Dependent Claim
72 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material containing about 2% to about 50% by weight of B 2 O 3 .
Claim 15
Dependent Claim
72 words
A molten carbonate fuel cell including a protective material for use in protecting components of said fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte, the protective material comprising a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or with a substance formed from the electrolyte, the oxide material containing about 2% to about 50% by weight of B 2 O 3 .
Claim 16
Dependent Claim
21 words
A molten carbonate fuel cell as set forth in claim 12 wherein the oxide material is in the form of pellets.
Claim 17
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 12 wherein the oxide material comprises TiO 2 and B 2 O 3 .
Claim 18
Dependent Claim
24 words
A molten carbonate fuel cell as set forth in claim 12 wherein the oxide material comprises SiO 2 and B 2 O 3 .
Claim 19
Dependent Claim
27 words
A molten carbonate fuel cell as set forth in claim 12 wherein the oxide material comprises TiO 2 , SiO 2 and B 2 O 3 .
Claim 20
Independent Claim
74 words
A method of protecting components of a molten carbonate fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte comprising placing in a molten carbonate fuel cell a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or a substance formed from the electrolyte, the oxide material including at least one substance having a melting point lower than the temperature at which the fuel cell is used.
Claim 21
Independent Claim
74 words
A method of protecting components of a molten carbonate fuel cell from a carbonate electrolyte or a substance formed from a carbonate electrolyte comprising placing in a molten carbonate fuel cell a ceramic formed from an oxide material chemically reactive with a carbonate electrolyte or a substance formed from the electrolyte, the oxide material including at least one substance having a melting point lower than the temperature at which the fuel cell is used.
Claim 22
Dependent Claim
30 words
A method of protecting components of a molten carbonate fuel cell as set forth in claim 17 wherein the ceramic is interposed between an electrolyte matrix and a reforming catalyst.
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) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |