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HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS, HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE SINTERED COMPACT, UNIT CELL FOR SOLID OXIDE FUEL CELLS, AND METHOD OF SYNTHESIZING HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS
PROBLEM TO BE SOLVED: To provide a novel and improved highly ion conductive zirconia electrolyte which keeps an inherently high oxygen ion conductivity that a conventional Scandia stabilized zirconia electrolyte (11ScSZ) has, but is arranged so that the crystalline structure of Scandia stabilized zirconia is stabilized in a cubic crystal structure and consequently, brings about a solution to the problem of occurrence of phase transition, and enables the improvement of the decrease in an output density.SOLUTION: A highly ion conductive zirconia electrolyte for solid oxide fuel cells is stabilized by a scandium oxide dissolved therein. In the zirconia electrolyte, at least one kind oxide selected from gadolinium oxide, samarium oxide and ytterbium oxide, and a cerium oxide are substituted and dissolved.
【課題】従来のスカンジア安定化ジルコニア電解質（１１ＳｃＳＺ）が持つ本然の高い酸素イオン伝導性を維持しながら、スカンジア安定化ジルコニアの結晶構造を立方晶結晶構造に安定化させて相転移発生問題を解決し、出力密度の減少を改善することが可能な、新規かつ改良された高イオン伝導性ジルコニア電解質を提供する。【解決手段】酸化スカンジウムが固溶されて安定化したジルコニア電解質であって、酸化ガドリニウム、酸化サマリウムおよび酸化イッテルビウムの中から選ばれる１種または２種以上の酸化物と、酸化セリウムとが置換固溶されている、固体酸化物燃料電池用高イオン伝導性ジルコニア電解質。【選択図】図１５
HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS, HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE SINTERED COMPACT, UNIT CELL FOR SOLID OXIDE FUEL CELLS, AND METHOD OF SYNTHESIZING HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS
PROBLEM TO BE SOLVED: To provide a novel and improved highly ion conductive zirconia electrolyte which keeps an inherently high oxygen ion conductivity that a conventional Scandia stabilized zirconia electrolyte (11ScSZ) has, but is arranged so that the crystalline structure of Scandia stabilized zirconia is stabilized in a cubic crystal structure and consequently, brings about a solution to the problem of occurrence of phase transition, and enables the improvement of the decrease in an output density.SOLUTION: A highly ion conductive zirconia electrolyte for solid oxide fuel cells is stabilized by a scandium oxide dissolved therein. In the zirconia electrolyte, at least one kind oxide selected from gadolinium oxide, samarium oxide and ytterbium oxide, and a cerium oxide are substituted and dissolved.
【課題】従来のスカンジア安定化ジルコニア電解質（１１ＳｃＳＺ）が持つ本然の高い酸素イオン伝導性を維持しながら、スカンジア安定化ジルコニアの結晶構造を立方晶結晶構造に安定化させて相転移発生問題を解決し、出力密度の減少を改善することが可能な、新規かつ改良された高イオン伝導性ジルコニア電解質を提供する。【解決手段】酸化スカンジウムが固溶されて安定化したジルコニア電解質であって、酸化ガドリニウム、酸化サマリウムおよび酸化イッテルビウムの中から選ばれる１種または２種以上の酸化物と、酸化セリウムとが置換固溶されている、固体酸化物燃料電池用高イオン伝導性ジルコニア電解質。【選択図】図１５
HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS, HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE SINTERED COMPACT, UNIT CELL FOR SOLID OXIDE FUEL CELLS, AND METHOD OF SYNTHESIZING HIGHLY ION CONDUCTIVE ZIRCONIA ELECTROLYTE FOR SOLID OXIDE FUEL CELLS
固体酸化物燃料電池用高イオン伝導性ジルコニア電解質、高イオン伝導性ジルコニア電解質焼結体、固体酸化物燃料電池用単電池、及び、固体酸化物燃料電池用高イオン伝導性ジルコニア電解質の合成方法
LIM KYOUNG TAE (author) / LEE HEE LAK (author) / SHIN HYONCHORU (author) / LEE CHOONG HWAN (author) / KIM BYUNG SUB (author)
2015-09-28
Patent
Electronic Resource
Japanese
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