EP0410420A2
Expired / Lapsed
EP
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Solid oxide fuel cell and method of manufacturing the same
Assignee: Taiheiyo Cement Corp
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Filing: 1990-07-25
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Granted: —
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Expires: 2010-07-25
Abstract
Abstract Disclosed are a solid oxide fuel cell and a method of manufacturing the same. An electrolyte layer (3) of the solid oxide fuel cell unit (5) is formed by spray coating the layer on a substrate (1) having a coefficient of thermal expansion which is substantially equal to that of the electrolyte layer (3), and the formed layer is then subjected to heat treatment.
Inventors
- 👤 Niroh Kitagawa
- 👤 Masayuki Kitoh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 06:13
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/1231; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A solid oxide fuel cell comprising: a solid oxide fuel cell unit (5) consisting of a fuel electrode layer (2), an electrolyte layer (3) and an air electrode layer (4), said layers (2, 3, 4) being subsequently superimposed to form an integral unit on a substrate (1); a first region (9) filled with air or oxygen; and a second region (8) filled with a fuel gas, said first and second regions (9, 8) being positioned as separated from each other by said fuel cell unit (5), said solid oxide fuel cell being characterised in that said substrate (1) has a coefficient of thermal expansion which is substantially equal to that of said electrolyte layer (3), and said electrolyte layer is obtained by effecting spray coating to form said electrolyte layer (3) and subjecting the formed layer to heat treatment.
Claim 2
Dependent Claim
139 words
A solid oxide fuel cell comprising: a solid oxide fuel cell unit (5) consisting of a fuel electrode layer (2), an electrolyte layer (3) and an air electrode layer (4), said layers (2, 3, 4) being subsequently superimposed to form an integral unit on a substrate (1); a first region (9) filled with air or oxygen; and a second region (8) filled with a fuel gas, said first and second regions (9, 8) being positioned as separated from each other by said fuel cell unit (5), said solid oxide fuel cell being characterised in that said substrate (1) has a coefficient of thermal expansion which is substantially equal to that of said electrolyte layer (3), and said electrolyte layer is obtained by effecting spray coating to form said electrolyte layer (3) and subjecting the formed layer to heat treatment.
Claim 3
Dependent Claim
27 words
A solid oxide fuel cell according to claim 1, wherein said electrolyte layer (3) is made of yttria-stabilized zirconia, and said substrate is made of yttria-stabilized zirconia.
Claim 4
Dependent Claim
27 words
A solid oxide fuel cell according to claim 1, wherein said electrolyte layer (3) is made of yttria-stabilized zirconia, and said substrate is made of calcia-stabilized zirconia.
Claim 5
Dependent Claim
27 words
A solid oxide fuel cell according to claim 1, wherein said electrolyte layer (3) is made of yttria-stabilized zirconia, and said substrate is made of magnesia-stabilized zirconia.
Claim 6
Independent Claim
145 words
A method of manufacturing a solid oxide fuel cell adapted to prepare a solid oxide fuel cell unit (5) consisting of a fuel electrode layer (2), an electrolyte layer (3) and an air electrode layer (4), said layers (2, 3, 4) being subsequently superimposed to form an integral unit on a substrate (1), and prepare a first region (9) filled with air or oxygen as well as a second region (8) filled with a fuel gas, said regions being positioned as separated from each other by said unit, said method being characterised by the steps of: preparing a substrate (1) having a coefficient of thermal expansion which is substantially equal to that of an electrolyte layer (3) to be formed thereon; and obtaining said electrolyte layer (3) by effecting spray coating to form said electrolyte layer (3) and subjecting the formed layer to heat treatment.
Claim 7
Independent Claim
145 words
A method of manufacturing a solid oxide fuel cell adapted to prepare a solid oxide fuel cell unit (5) consisting of a fuel electrode layer (2), an electrolyte layer (3) and an air electrode layer (4), said layers (2, 3, 4) being subsequently superimposed to form an integral unit on a substrate (1), and prepare a first region (9) filled with air or oxygen as well as a second region (8) filled with a fuel gas, said regions being positioned as separated from each other by said unit, said method being characterised by the steps of: preparing a substrate (1) having a coefficient of thermal expansion which is substantially equal to that of an electrolyte layer (3) to be formed thereon; and obtaining said electrolyte layer (3) by effecting spray coating to form said electrolyte layer (3) and subjecting the formed layer to heat treatment.
Claim 8
Dependent Claim
17 words
A method according to claim 5, wherein said heat treatment is effected at a temperature above 1300°C.
Claim 9
Dependent Claim
23 words
A method according to claim 5, wherein said heat treatment is effected for a period of time at least equal to 1 hour.
References Cited (Backward Citations)
No citation records indexed.
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