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Preparation method and application of low-temperature sintered 8YSZ electrolyte containing bismuth oxide
The invention discloses a preparation method and application of a bismuth-containing oxide low-temperature sintered 8YSZ electrolyte, and relates to the technical field of inorganic materials. Comprising the following steps: mixing reaction raw materials with a solvent to obtain a mixed solution; then dropwise adding a precipitant solution into the mixed solution, and obtaining a Y < 0.5 > Bi < 1.5 > O < 3 > (YDB) powder precursor through a coprecipitation method; then the coprecipitation powder and 8YSZ powder are mixed, ground and sintered, so that the sintering temperature of the electrolyte is reduced; a compact electrolyte ceramic block is obtained by adjusting the content of YDB; wherein the reaction raw materials comprise an yttrium source compound and a bismuth source compound, and the precipitator is ammonium carbonate; by adding a small amount of YDB, the densification temperature of 8YSZ is reduced, and the density and grain boundary conductivity are improved. The Bi element is cheap and easy to obtain, the oxygen ion conduction electrolyte is easy to prepare and low in densification temperature, the commercialization cost of the solid oxide fuel cell can be remarkably reduced, and good application potential is achieved.
一种含铋氧化物低温烧结8YSZ电解质的制备方法及应用涉及无机材料技术领域。包括将反应原料与溶剂混合以得到混合溶液；接着将所述混合液中逐滴加入沉淀剂溶液，通过共沉淀法以得到Y0.5Bi1.5O3(YDB)粉体前驱体；再对所述共沉淀粉体与8YSZ粉体混合研磨和烧结，以降低电解质的烧结温度；通过调节YDB含量，获得致密电解质陶瓷块体；其中，所述反应原料包括钇源化合物、铋源化合物，所述沉淀剂为碳酸铵；少量YDB的加入降低了8YSZ的致密化温度，提高了致密度和晶界电导。本发明中Bi元素廉价易得，该氧离子传导电解质制备简单，致密化温度低，可以显著降低固体氧化物燃料电池的商业化成本，具有良好的应用潜力。
Preparation method and application of low-temperature sintered 8YSZ electrolyte containing bismuth oxide
The invention discloses a preparation method and application of a bismuth-containing oxide low-temperature sintered 8YSZ electrolyte, and relates to the technical field of inorganic materials. Comprising the following steps: mixing reaction raw materials with a solvent to obtain a mixed solution; then dropwise adding a precipitant solution into the mixed solution, and obtaining a Y < 0.5 > Bi < 1.5 > O < 3 > (YDB) powder precursor through a coprecipitation method; then the coprecipitation powder and 8YSZ powder are mixed, ground and sintered, so that the sintering temperature of the electrolyte is reduced; a compact electrolyte ceramic block is obtained by adjusting the content of YDB; wherein the reaction raw materials comprise an yttrium source compound and a bismuth source compound, and the precipitator is ammonium carbonate; by adding a small amount of YDB, the densification temperature of 8YSZ is reduced, and the density and grain boundary conductivity are improved. The Bi element is cheap and easy to obtain, the oxygen ion conduction electrolyte is easy to prepare and low in densification temperature, the commercialization cost of the solid oxide fuel cell can be remarkably reduced, and good application potential is achieved.
一种含铋氧化物低温烧结8YSZ电解质的制备方法及应用涉及无机材料技术领域。包括将反应原料与溶剂混合以得到混合溶液；接着将所述混合液中逐滴加入沉淀剂溶液，通过共沉淀法以得到Y0.5Bi1.5O3(YDB)粉体前驱体；再对所述共沉淀粉体与8YSZ粉体混合研磨和烧结，以降低电解质的烧结温度；通过调节YDB含量，获得致密电解质陶瓷块体；其中，所述反应原料包括钇源化合物、铋源化合物，所述沉淀剂为碳酸铵；少量YDB的加入降低了8YSZ的致密化温度，提高了致密度和晶界电导。本发明中Bi元素廉价易得，该氧离子传导电解质制备简单，致密化温度低，可以显著降低固体氧化物燃料电池的商业化成本，具有良好的应用潜力。
Preparation method and application of low-temperature sintered 8YSZ electrolyte containing bismuth oxide
一种含铋氧化物低温烧结8YSZ电解质的制备方法及应用
XIA CHANGRONG (author) / ZHANG LIJIE (author)
2023-12-12
Patent
Electronic Resource
Chinese
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