A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MANUFACTURING METHOD OF PEROVSKITE OXIDE, MANUFACTURING METHOD OF PEROVSKITE OXIDE PRECURSOR, AND MANUFACTURING METHOD OF FUEL CELL
To provide a manufacturing method of facilitating sintering at low temperature at which a barium component can be prevented from being volatilized, by which single phase perovskite oxide can be easily obtained, and a composition of the perovskite oxide contained in a sintered body after calcination with a ratio of a rare earth element component, a barium component, and a zirconium component each that are used as raw material.SOLUTION: A manufacturing method of perovskite oxide comprises the steps of: preparing a raw material aqueous solution containing rare earth element ions, barium ions, and zirconium ions; adding a precipitant in which the molar number of ammonium hydrogen carbonate to one mole of ammonium hydroxide is 0.08 to 0.45 moles, that contains the ammonium hydrogen carbonate and the ammonium hydrogen in an amount of 0.5 to 20 times the rare earth element ions, the barium ions, and the zirconium ions in the raw material aqueous solution, into the raw material aqueous solution to prepare a mixed solution, resulting in precipitation of a perovskite oxide precursor; and calcinating the perovskite oxide precursor.SELECTED DRAWING: None
【課題】バリウム成分の揮発を抑制できる低い温度で焼結でき、単一相のペロブスカイト酸化物が得られやすく、原料として使用する希土類元素成分とバリウム成分とジルコニウム成分の割合によって、焼成後の焼結体に含まれるペロブスカイト酸化物の組成を精度よく制御できる製造方法を提供する。【解決手段】希土類元素のイオンと、バリウムイオンと、ジルコニウムイオンとを含有する原料水溶液を調製し、原料水溶液中の希土類元素のイオンとバリウムイオンとジルコニウムイオンの０．５倍～２０倍の水酸化アンモニウムと炭酸水素アンモニウムとを含み、前記水酸化アンモニウム１モルに対する前記炭酸水素アンモニウムのモル数が０．０８モル～０．４５モルである沈殿剤を、原料水溶液に添加して混合液とすることによりペロブスカイト酸化物前駆体を沈殿させ、ペロブスカイト酸化物前駆体を焼成するペロブスカイト酸化物の製造方法とする。【選択図】なし
MANUFACTURING METHOD OF PEROVSKITE OXIDE, MANUFACTURING METHOD OF PEROVSKITE OXIDE PRECURSOR, AND MANUFACTURING METHOD OF FUEL CELL
To provide a manufacturing method of facilitating sintering at low temperature at which a barium component can be prevented from being volatilized, by which single phase perovskite oxide can be easily obtained, and a composition of the perovskite oxide contained in a sintered body after calcination with a ratio of a rare earth element component, a barium component, and a zirconium component each that are used as raw material.SOLUTION: A manufacturing method of perovskite oxide comprises the steps of: preparing a raw material aqueous solution containing rare earth element ions, barium ions, and zirconium ions; adding a precipitant in which the molar number of ammonium hydrogen carbonate to one mole of ammonium hydroxide is 0.08 to 0.45 moles, that contains the ammonium hydrogen carbonate and the ammonium hydrogen in an amount of 0.5 to 20 times the rare earth element ions, the barium ions, and the zirconium ions in the raw material aqueous solution, into the raw material aqueous solution to prepare a mixed solution, resulting in precipitation of a perovskite oxide precursor; and calcinating the perovskite oxide precursor.SELECTED DRAWING: None
【課題】バリウム成分の揮発を抑制できる低い温度で焼結でき、単一相のペロブスカイト酸化物が得られやすく、原料として使用する希土類元素成分とバリウム成分とジルコニウム成分の割合によって、焼成後の焼結体に含まれるペロブスカイト酸化物の組成を精度よく制御できる製造方法を提供する。【解決手段】希土類元素のイオンと、バリウムイオンと、ジルコニウムイオンとを含有する原料水溶液を調製し、原料水溶液中の希土類元素のイオンとバリウムイオンとジルコニウムイオンの０．５倍～２０倍の水酸化アンモニウムと炭酸水素アンモニウムとを含み、前記水酸化アンモニウム１モルに対する前記炭酸水素アンモニウムのモル数が０．０８モル～０．４５モルである沈殿剤を、原料水溶液に添加して混合液とすることによりペロブスカイト酸化物前駆体を沈殿させ、ペロブスカイト酸化物前駆体を焼成するペロブスカイト酸化物の製造方法とする。【選択図】なし
MANUFACTURING METHOD OF PEROVSKITE OXIDE, MANUFACTURING METHOD OF PEROVSKITE OXIDE PRECURSOR, AND MANUFACTURING METHOD OF FUEL CELL
ペロブスカイト酸化物の製造方法、ペロブスカイト酸化物前駆体の製造方法、燃料電池の製造方法
MORI MASASHI (author) / MATSUDA MALIK RYUMA (author) / MORIGA TOSHIHIRO (author) / MURAI KEIICHIRO (author)
2024-03-18
Patent
Electronic Resource
Japanese
IPC:
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
/
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
| European Patent Office | 2017
ELECTROLYTIC MATERIAL FOR SOLID OXIDE FUEL CELL AND METHOD FOR MANUFACTURING PRECURSOR THEREOF
| European Patent Office | 2020