JP5355878B2 - セラミック電解質構造体及び製造方法並びに関連物品 - Google Patents
セラミック電解質構造体及び製造方法並びに関連物品 Download PDFInfo
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- JP5355878B2 JP5355878B2 JP2007307222A JP2007307222A JP5355878B2 JP 5355878 B2 JP5355878 B2 JP 5355878B2 JP 2007307222 A JP2007307222 A JP 2007307222A JP 2007307222 A JP2007307222 A JP 2007307222A JP 5355878 B2 JP5355878 B2 JP 5355878B2
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- ceramic electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
図1は、ナノサイズ微小亀裂及び細孔を有する大気プラズマ溶射イットリア安定化ジルコニアセラミック電解質試料の断面走査電子顕微鏡写真である。
硝酸イットリウム及び酸化二硝酸ジルコニウムの前駆体水溶液を調製し、適当な比率で混合することで、硝酸塩分解後に8モル%Y2O3−ZrO2(8YSZ)の最終組成を有する0.6M溶液を得た。厚さ65ミクロンの8YSZ大気プラズマ溶射(APS)電解質を有する直径1インチの多孔質ステンレス鋼基板を基線として使用した。8YSZ硝酸塩溶液をAPSコーティング上に3.5mg/cm2で塗布し、その間に溶液は透過性コーティング中に目に見えて浸透した。基板を室温及び70℃でそれぞれ約5分間ずつ風乾した。次に、2℃/分の加熱及び冷却速度で基板に500℃で0.5時間の熱処理を施すことで、硝酸塩を分解して酸化物を生成させた。塗布から熱処理までの操作を全部で10回繰り返した。
硝酸イットリウム及び酸化二硝酸ジルコニウムの前駆体水溶液を調製し、適当な比率で混合することで、硝酸塩分解後に8モル%Y2O3−ZrO2(8YSZ)の最終組成を有する0.9M溶液を得た。電気化学的試験に使用されるものの典型例である、8YSZ大気プラズマ溶射(APS)電解質を有する4インチ平方のSOFC陽極包囲体を以後の硝酸塩溶液含浸のための基線として使用した。
12 ナノサイズ微小亀裂
14 細孔
Claims (12)
- ミクロ組織を有するセラミック電解質(10)であって、ミクロ組織は少なくとも、第1の平均微小亀裂長さと第1の平均微小亀裂幅を有する複数の微小亀裂(12)を含む第1の領域と、第2の平均微小亀裂長さと第2の平均微小亀裂幅を有する第2の領域とを含んでなり、第1の領域が1×10 -10 cm 2 Pa -1 sec -1 未満の空気透過度を有する気密領域であり、第2の領域がコンプライアント領域であって、
(a)第1の平均微小亀裂長さが第2の平均微小亀裂長さよりも小さいか、及び/又は
(b)第1の平均微小亀裂幅が第2の平均微小亀裂幅よりも小さい、セラミック電解質(10)。 - モノリシック構造体をなす、請求項1記載のセラミック電解質(10)。
- モノリシック構造体が5〜70μmの範囲内の厚さを有する、請求項2記載のセラミック電解質(10)。
- 第2の平均微小亀裂長さが第1の平均微小亀裂長さよりも10%以上大きい、請求項1乃至請求項3のいずれか1項記載のセラミック電解質(10)。
- 第1の平均微小亀裂長さが850〜900nmの範囲内にあって、第2の平均微小亀裂長さが950〜1050nmの範囲内にある、請求項1乃至請求項4のいずれか1項記載のセラミック電解質(10)。
- 第2の平均微小亀裂幅が第1の平均微小亀裂幅よりも5%以上大きい、請求項1乃至請求項5のいずれか1項記載のセラミック電解質(10)。
- 第1の平均微小亀裂幅が95〜105nmの範囲内にあって、第2の平均微小亀裂幅は105〜120nmの範囲内にある、請求項1乃至請求項6のいずれか1項記載のセラミック電解質(10)。
- ミクロ組織がさらに、第1の領域において第1の多孔度を有し、第2の領域において第2の異なる多孔度を有する、請求項1乃至請求項7のいずれか1項記載のセラミック電解質(10)。
- 第1の多孔度が4.5〜6.5体積%の範囲内の値を有し、第2の多孔度が6.5〜10体積%の範囲内の値を有する、請求項8記載のセラミック電解質(10)。
- 当該セラミック電解質(10)が、ジルコニア、セリア、ハフニア、酸化ビスマス、ランタンガレート及びトリアからなる群から選択される材料からなる、請求項1乃至請求項9のいずれか1項記載のセラミック電解質(10)。
- アノード(24)、カソード(22)、及びアノード(24)とカソード(22)との間に配設された請求項1乃至請求項10のいずれか1項記載のセラミック電解質(10)を含んでなる固体酸化物型燃料電池(20)。
- 請求項1乃至請求項10のいずれか1項記載のセラミック電解質(10)の製造方法であって、
複数のナノサイズ微小亀裂を含むセラミック電解質(10)を設ける段階と、
セラミック電解質(10)の一方の表面から優先的にナノサイズ微小亀裂(12)を閉鎖することで、セラミック電解質(10)が1以上の気密領域及び1以上のコンプライアント領域を有するようにする段階と
を含んでなる方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/565,236 | 2006-11-30 | ||
US11/565,236 US20080131750A1 (en) | 2006-11-30 | 2006-11-30 | Ceramic electrolyte structure and method of forming; and related articles |
Publications (2)
Publication Number | Publication Date |
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JP2008153213A JP2008153213A (ja) | 2008-07-03 |
JP5355878B2 true JP5355878B2 (ja) | 2013-11-27 |
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JP2007307222A Active JP5355878B2 (ja) | 2006-11-30 | 2007-11-28 | セラミック電解質構造体及び製造方法並びに関連物品 |
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US (1) | US20080131750A1 (ja) |
JP (1) | JP5355878B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US8182965B2 (en) * | 2008-09-30 | 2012-05-22 | Battelle Memorial Institute | Optimized cell configurations for stable LSCF-based solid oxide fuel cells |
US9660312B2 (en) * | 2012-06-19 | 2017-05-23 | Robert Bosch Gmbh | Metal/air battery with gas separation nanostructure |
KR101335464B1 (ko) | 2012-06-29 | 2013-11-29 | 한국과학기술연구원 | 산화 비스무스를 포함하는 세리아계 조성물, 세리아계 복합 전해질 분말 및 이를 이용한 소결 방법 및 소결체 |
JP6879759B2 (ja) * | 2017-02-09 | 2021-06-02 | 株式会社日本触媒 | ジルコニア電解質およびその製造方法 |
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JPH05135787A (ja) * | 1991-03-28 | 1993-06-01 | Ngk Insulators Ltd | 固体電解質膜の製造方法及び固体電解質型燃料電池の製造方法 |
JPH06103988A (ja) * | 1992-09-17 | 1994-04-15 | Ngk Insulators Ltd | 固体電解質型燃料電池 |
JPH0721830A (ja) * | 1993-06-30 | 1995-01-24 | Kyocera Corp | 固体電解質膜の製法 |
JPH11329463A (ja) * | 1998-05-19 | 1999-11-30 | Fuji Electric Corp Res & Dev Ltd | 固体電解質型燃料電池およびその製造方法 |
US20020155227A1 (en) * | 2001-04-23 | 2002-10-24 | Sulzer Markets And Technolgy Ag | Method for the manufacture of a functional ceramic layer |
US20050238796A1 (en) * | 2004-04-22 | 2005-10-27 | Armstong Tad J | Method of fabricating composite cathodes for solid oxide fuel cells by infiltration |
JP2006164801A (ja) * | 2004-12-08 | 2006-06-22 | Toyota Motor Corp | 固体電解質、それを備えた燃料電池およびそれらの製造方法 |
JP2007018959A (ja) * | 2005-07-11 | 2007-01-25 | Nissan Motor Co Ltd | 固体酸化物型燃料電池の電極構造およびその製造方法 |
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2006
- 2006-11-30 US US11/565,236 patent/US20080131750A1/en not_active Abandoned
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US20080131750A1 (en) | 2008-06-05 |
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