US5130210A
Expired / Lapsed
US
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Stabilized zirconia solid electrolyte and process for preparation thereof
Assignee: Tonen General Sekiyu KK
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Filing: 1990-08-24
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Granted: 1992-07-14
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Expires: 2010-08-24
Abstract
Abstract The mechanical strength of stabilized zirconia is improved without lowering the ion conductivity by providing a solid electrolyte comprising stabilized zirconia and a metal oxide dispersed within grains or grain boundaries of stabilized zirconia, the metal oxide having an average submicron particle size and stabilized zirconia having an average particle size larger than 1 micron, typically larger than 10 μm or even 100 μm.
Inventors
- 👤 Hiroyuki Iwasaki
- 👤 Fumiya Ishizaki
- 👤 Toshihiko Yoshida
- 👤 Nobuaki Tagaya
- 👤 Isao Mukaizawa
- 👤 Hiroshi Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/02; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/486; H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/124; H01M8/1246; H01M8/1253; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/40; C01P2006/90; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A solid electrolyte comprising stabilized zirconia and a metal oxide contained therein, wherein the metal oxide is dispersed within grains and/or in grain boundaries of stabilized zirconia particles, wherein the zirconia particles have an average particle size of 3 to 20 μm and a particle size of at least 90% of the metal oxide particles is within a range of 0.1 to 0.5 μm.
Claim 2
Dependent Claim
64 words
A solid electrolyte comprising stabilized zirconia and a metal oxide contained therein, wherein the metal oxide is dispersed within grains and/or in grain boundaries of stabilized zirconia particles, wherein the zirconia particles have an average particle size of 3 to 20 μm and a particle size of at least 90% of the metal oxide particles is within a range of 0.1 to 0.5 μm.
Claim 3
Dependent Claim
37 words
A solid electrolyte according to claim 1, wherein said stabilized zirconia is zirconia stabilized by addition of about 5-10 mole % of at least one stabilizer selected from the group consisting of yttrium, cerium, calcium and magnesium.
Claim 4
Dependent Claim
37 words
A solid electrolyte according to claim 2, wherein said stabilized zirconia is zirconia stabilized by addition of about 8 mole % of at least one stabilizer selected from the group consisting of yttrium, cerium, calcium and magnesium.
Claim 5
Dependent Claim
39 words
A solid electrolyte according to claim 1, wherein said metal oxide is at least one selected from the group consisting of alumina, chromia, mullite, magnesia, lime, rare earth metal oxide, titania, bismuth oxide, thoria, urania and composite oxides thereof.
Claim 6
Dependent Claim
25 words
A solid electrolyte according to claim 4, wherein said metal oxide is at least one selected from the group consisting of alumina, chromia and mullite.
Claim 7
Dependent Claim
37 words
A solid electrolyte according to claim 4, wherein said metal oxide is at least one selected from the group consisting of magnesia, calcia, rare earth metal oxide, titania, ceria, bismuth oxide, thoria, urania and composite oxide thereof.
Claim 8
Dependent Claim
21 words
A solid electrolyte according to claim 4, wherein said metal oxide is at least one of metal oxide-doped ceria and zirconia.
Claim 9
Dependent Claim
23 words
A solid electrolyte according to claim 1, wherein said metal oxide is contained in an amount of about 0.1 to 5% by weight.
References Cited (Backward Citations)
US4365011A
Cited
US4857165A
Cited
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