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Preparation method of large-size lithium lanthanum zirconium tantalum oxide solid electrolyte
The invention provides a preparation method of a large-size lithium lanthanum zirconium tantalum oxide solid electrolyte, which comprises the following steps: (S1) pre-sintered lithium lanthanum zirconium tantalum oxide (LLZTO) powder is mixed with water, a high-molecular binder is added, the mixture is poured into a sand mill, and slurry is taken out for later use after sanding is finished; (S2) uniformly dispersing the slurry obtained in the step (S1), and performing spray granulation to obtain powder with the particle size of 20-60 microns; and (S3) coating a release agent on the inner wall of a cylindrical mold with the diameter phi larger than 90 mm, then adding the LLZTO powder obtained in the step (S2), pressing to obtain an LLZTO large-size plate-shaped green body, adding the pre-sintered but unsanded LLZTO powder at the bottom of a crucible as buried powder, uniformly paving the LLZTO powder according to the size of the green body, then putting the green body on the buried powder, sintering and cooling to obtain the LLZTO large-size plate-shaped green body. And preparing to obtain the large-size plate-shaped lithium lanthanum zirconium tantalum oxide solid electrolyte. The process is simple and easy to implement, and the large-size lithium lanthanum zirconium tantalum oxide solid electrolyte which is stable in quality and excellent is prepared.
本发明提供一种大尺寸锂镧锆钽氧固态电解质的制备方法，包括以下步骤：(S1)预烧过的锂镧锆钽氧(LLZTO)粉料与水混合，再加入高分子粘结剂，倒入砂磨机中，砂磨结束后取出浆料备用；(S2)将步骤(S1)中得到的浆料分散均匀后进行喷雾造粒，其中得到粒径在20‑60μm粉料；(S3)在大于φ90mm的圆柱形模具内壁涂脱模剂，然后加入步骤(S2)所得LLZTO粉料，压制得到LLZTO大尺寸板状生坯，在坩埚底部加入预烧过但未砂磨的LLZTO粉料作为埋粉，将其按照生坯尺寸均匀平铺，后将生坯放置在埋粉上，烧结，冷却，制备得到大尺寸板状锂镧锆钽氧固态电解质。本发明工艺简单易行，制备得到质量稳定且优异的大尺寸的锂镧锆钽氧固态电解质。
Preparation method of large-size lithium lanthanum zirconium tantalum oxide solid electrolyte
The invention provides a preparation method of a large-size lithium lanthanum zirconium tantalum oxide solid electrolyte, which comprises the following steps: (S1) pre-sintered lithium lanthanum zirconium tantalum oxide (LLZTO) powder is mixed with water, a high-molecular binder is added, the mixture is poured into a sand mill, and slurry is taken out for later use after sanding is finished; (S2) uniformly dispersing the slurry obtained in the step (S1), and performing spray granulation to obtain powder with the particle size of 20-60 microns; and (S3) coating a release agent on the inner wall of a cylindrical mold with the diameter phi larger than 90 mm, then adding the LLZTO powder obtained in the step (S2), pressing to obtain an LLZTO large-size plate-shaped green body, adding the pre-sintered but unsanded LLZTO powder at the bottom of a crucible as buried powder, uniformly paving the LLZTO powder according to the size of the green body, then putting the green body on the buried powder, sintering and cooling to obtain the LLZTO large-size plate-shaped green body. And preparing to obtain the large-size plate-shaped lithium lanthanum zirconium tantalum oxide solid electrolyte. The process is simple and easy to implement, and the large-size lithium lanthanum zirconium tantalum oxide solid electrolyte which is stable in quality and excellent is prepared.
本发明提供一种大尺寸锂镧锆钽氧固态电解质的制备方法，包括以下步骤：(S1)预烧过的锂镧锆钽氧(LLZTO)粉料与水混合，再加入高分子粘结剂，倒入砂磨机中，砂磨结束后取出浆料备用；(S2)将步骤(S1)中得到的浆料分散均匀后进行喷雾造粒，其中得到粒径在20‑60μm粉料；(S3)在大于φ90mm的圆柱形模具内壁涂脱模剂，然后加入步骤(S2)所得LLZTO粉料，压制得到LLZTO大尺寸板状生坯，在坩埚底部加入预烧过但未砂磨的LLZTO粉料作为埋粉，将其按照生坯尺寸均匀平铺，后将生坯放置在埋粉上，烧结，冷却，制备得到大尺寸板状锂镧锆钽氧固态电解质。本发明工艺简单易行，制备得到质量稳定且优异的大尺寸的锂镧锆钽氧固态电解质。
Preparation method of large-size lithium lanthanum zirconium tantalum oxide solid electrolyte
一种大尺寸锂镧锆钽氧固态电解质的制备方法
WEI XIANKUN (author) / JIANG YIN (author) / CHANG MINMIN (author) / ZHAO LONGHUI (author)
2024-10-11
Patent
Electronic Resource
Chinese
Lithium lanthanum zirconium oxide-based solid electrolyte and preparation method thereof
| European Patent Office | 2021
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| European Patent Office | 2024
| European Patent Office | 2020