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SCANDIA STABILIZED ZIRCONIA POWDER FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, SCANDIA-STABILIZED ZIRCONIA SINTERED COMPACT FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, AND SOLID OXIDE FUEL CELL
PROBLEM TO BE SOLVED: To provide: scandia stabilized zirconia powder for a solid oxide fuel cell, which is high in crystal structure stability, and low in grain boundary resistance value and which has high ion conductivity; scandia-stabilized zirconia sintered compact for a solid oxide fuel cell; and methods for manufacturing them.SOLUTION: Scandia stabilized zirconia powder for a solid oxide fuel cell comprises: a compound expressed by the following general formula (1): (ZrO)(ScO)(AlO). In the formula (1), 0.09≤x≤0.11 and 0.002≤a<0.01. The scandia stabilized zirconia powder has a crystal structure of a rhombohedral crystal phase. A sintered compact of the scandia stabilized zirconia powder has a crystal structure of a cubic crystal phase. The sintered compact of the scandia stabilized zirconia powder is 12 Ωcm or less in grain boundary resistance value at 550°C.SELECTED DRAWING: None
【課題】結晶構造の安定性が高く，しかも，低い粒界抵抗値を有する，高イオン電導性の固体酸化物形燃料電池用スカンジア安定化ジルコニア粉末及び固体酸化物形燃料電池用スカンジア安定化ジルコニア焼結体，並びにこれらの製造方法を提供する。【解決手段】固体酸化物形燃料電池用スカンジア安定化ジルコニア粉末であって，一般式（１）（ＺｒＯ２）１−ｘ−ａ（Ｓｃ２Ｏ３）ｘ（Ａｌ２Ｏ３）ａで表される化合物を含有する。式（１）において，０．０９≦ｘ≦０．１１，かつ，０．００２≦ａ＜０．０１である。結晶構造は菱面体晶相である。スカンジア安定化ジルコニア粉末の焼結体の結晶構造が立方晶相である。スカンジア安定化ジルコニア粉末の焼結体の５５０℃における粒界抵抗値が１２Ω・ｃｍ以下である。【選択図】なし
SCANDIA STABILIZED ZIRCONIA POWDER FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, SCANDIA-STABILIZED ZIRCONIA SINTERED COMPACT FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, AND SOLID OXIDE FUEL CELL
PROBLEM TO BE SOLVED: To provide: scandia stabilized zirconia powder for a solid oxide fuel cell, which is high in crystal structure stability, and low in grain boundary resistance value and which has high ion conductivity; scandia-stabilized zirconia sintered compact for a solid oxide fuel cell; and methods for manufacturing them.SOLUTION: Scandia stabilized zirconia powder for a solid oxide fuel cell comprises: a compound expressed by the following general formula (1): (ZrO)(ScO)(AlO). In the formula (1), 0.09≤x≤0.11 and 0.002≤a<0.01. The scandia stabilized zirconia powder has a crystal structure of a rhombohedral crystal phase. A sintered compact of the scandia stabilized zirconia powder has a crystal structure of a cubic crystal phase. The sintered compact of the scandia stabilized zirconia powder is 12 Ωcm or less in grain boundary resistance value at 550°C.SELECTED DRAWING: None
【課題】結晶構造の安定性が高く，しかも，低い粒界抵抗値を有する，高イオン電導性の固体酸化物形燃料電池用スカンジア安定化ジルコニア粉末及び固体酸化物形燃料電池用スカンジア安定化ジルコニア焼結体，並びにこれらの製造方法を提供する。【解決手段】固体酸化物形燃料電池用スカンジア安定化ジルコニア粉末であって，一般式（１）（ＺｒＯ２）１−ｘ−ａ（Ｓｃ２Ｏ３）ｘ（Ａｌ２Ｏ３）ａで表される化合物を含有する。式（１）において，０．０９≦ｘ≦０．１１，かつ，０．００２≦ａ＜０．０１である。結晶構造は菱面体晶相である。スカンジア安定化ジルコニア粉末の焼結体の結晶構造が立方晶相である。スカンジア安定化ジルコニア粉末の焼結体の５５０℃における粒界抵抗値が１２Ω・ｃｍ以下である。【選択図】なし
SCANDIA STABILIZED ZIRCONIA POWDER FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, SCANDIA-STABILIZED ZIRCONIA SINTERED COMPACT FOR SOLID OXIDE FUEL CELL, MANUFACTURING METHOD THEREOF, AND SOLID OXIDE FUEL CELL
固体酸化物形燃料電池用スカンジア安定化ジルコニア粉末及びその製造方法，固体酸化物形燃料電池用スカンジア安定化ジルコニア焼結体及びその製造方法，並びに固体酸化物形燃料電池
TAMASAKI FUMINORI (author)
2017-07-27
Patent
Electronic Resource
Japanese
IPC:
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
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