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Support type lanthanum gallate-based oxygen ion conductor electrolyte membrane and preparation method thereof
The invention discloses a supported lanthanum gallate-based oxygen ion conductor electrolyte membrane and a preparation method thereof, and belongs to the technical field of solid oxide batteries, and the preparation method comprises the following steps: carrying out ball milling treatment on lanthanum gallate-based powder and an inorganic auxiliary agent, adding an organic solvent, a plasticizer and a dispersant, adding an organic solution in which a binder is dissolved, and carrying out tape casting, stamping and sintering to obtain the supported lanthanum gallate-based oxygen ion conductor electrolyte membrane. And obtaining the finished electrolyte sheet. Through the partition glue discharging technology, the defects caused by non-uniform glue discharging can be reduced, the thermal stress in the sintering process is reduced, and the risk of warping and deformation of the plate is reduced; meanwhile, the inorganic additive and the lanthanum gallate-based powder are firstly subjected to ball milling, so that the possibility of powder agglomeration is reduced, and the homogeneity of the tape-casting slurry is ensured; the binder is dissolved and then added into the turbid liquid, so that the uniformity of the slurry can be better ensured, highly uniform chemical composition distribution is realized by finely controlling the mixing of the raw materials, and the obtained yttrium-stabilized oxidation electrolyte has the oxygen ion conductivity obviously higher than that of the traditional yttrium-stabilized oxidation electrolyte at high temperature.
本发明公开了一种支撑型镓酸镧基氧离子导体电解质膜片及其制备方法，属于固体氧化物电池技术领域，包括：先将镓酸镧基粉体、无机助剂球磨处理，再加入有机溶剂、塑化剂、分散剂，再加入溶解粘结剂的有机溶液，再流延成型、冲压、烧结，得到成品电解质片。通过分区排胶技术，能够减少非均匀排胶导致的缺陷，并降低了烧结过程中的热应力，减少了板材翘曲和变形的风险；同时，先将无机助剂与镓酸镧基粉体进行球磨，减小了粉体团聚的可能性，保证流延浆料的均质性；将粘结剂溶解后加入悬浊液能够更好地保证浆料的均一性，通过精细控制原料混合，实现了高度均匀的化学组成分布，得到在高温下的氧离子传导率显著高于传统的钇稳定氧化电解质。
Support type lanthanum gallate-based oxygen ion conductor electrolyte membrane and preparation method thereof
The invention discloses a supported lanthanum gallate-based oxygen ion conductor electrolyte membrane and a preparation method thereof, and belongs to the technical field of solid oxide batteries, and the preparation method comprises the following steps: carrying out ball milling treatment on lanthanum gallate-based powder and an inorganic auxiliary agent, adding an organic solvent, a plasticizer and a dispersant, adding an organic solution in which a binder is dissolved, and carrying out tape casting, stamping and sintering to obtain the supported lanthanum gallate-based oxygen ion conductor electrolyte membrane. And obtaining the finished electrolyte sheet. Through the partition glue discharging technology, the defects caused by non-uniform glue discharging can be reduced, the thermal stress in the sintering process is reduced, and the risk of warping and deformation of the plate is reduced; meanwhile, the inorganic additive and the lanthanum gallate-based powder are firstly subjected to ball milling, so that the possibility of powder agglomeration is reduced, and the homogeneity of the tape-casting slurry is ensured; the binder is dissolved and then added into the turbid liquid, so that the uniformity of the slurry can be better ensured, highly uniform chemical composition distribution is realized by finely controlling the mixing of the raw materials, and the obtained yttrium-stabilized oxidation electrolyte has the oxygen ion conductivity obviously higher than that of the traditional yttrium-stabilized oxidation electrolyte at high temperature.
本发明公开了一种支撑型镓酸镧基氧离子导体电解质膜片及其制备方法，属于固体氧化物电池技术领域，包括：先将镓酸镧基粉体、无机助剂球磨处理，再加入有机溶剂、塑化剂、分散剂，再加入溶解粘结剂的有机溶液，再流延成型、冲压、烧结，得到成品电解质片。通过分区排胶技术，能够减少非均匀排胶导致的缺陷，并降低了烧结过程中的热应力，减少了板材翘曲和变形的风险；同时，先将无机助剂与镓酸镧基粉体进行球磨，减小了粉体团聚的可能性，保证流延浆料的均质性；将粘结剂溶解后加入悬浊液能够更好地保证浆料的均一性，通过精细控制原料混合，实现了高度均匀的化学组成分布，得到在高温下的氧离子传导率显著高于传统的钇稳定氧化电解质。
Support type lanthanum gallate-based oxygen ion conductor electrolyte membrane and preparation method thereof
一种支撑型镓酸镧基氧离子导体电解质膜片及其制备方法
LI ZIQIANG (author) / WU HAODONG (author) / LUO TIANYONG (author)
2024-06-07
Patent
Electronic Resource
Chinese
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