Garnet type LLZTO ceramic oxide is a promising solid-state electrolyte for use in Li-ion batteries because it has good chemical stability, adequate mechanical strength. However, lithium dendrite growth still needs to be addressed. The opacity of the solid electrolyte hinders in-situ investigation of dendrite growth. Therefore, semi-transparent LLZTO with high-density is needed. The traditional fabrication process for the garnet type LLZTO is cumbersome, and dense LLZTO disks with high transparency are difficult to fabricate. In this work, Al-LLZTO powder was made by solid-state reaction. A wet ceramic processing method, pressure filtration followed by sintering, was developed to make dense LLZTO with high ionic conductivity (1.47 × 10⁻⁴ S/cm) and adequate transmittance (17–23%) to visible light from 500 to 800 nm to observe and monitor dendrite growth.

石榴石型LLZTO陶瓷氧化物是一种有前途的固态电解质，可用于锂离子电池，因为它具有良好的化学稳定性和足够的机械强度。但是，锂枝晶的生长仍然需要解决。固体电解质的不透明性阻碍了枝晶生长的原位研究。因此，需要具有高密度的半透明LLZTO。石榴石型LLZTO的传统制造过程很麻烦，并且难以制造具有高透明度的致密LLZTO光盘。在这项工作中，Al-LLZTO粉末通过固相反应制得。开发了一种湿法陶瓷加工方法，先加压过滤再进行烧结，以制备具有高离子电导率（1.47×10 ^-4）的致密LLZTO。 S / cm）和对500至800 nm可见光具有足够的透射率（17–23％），以观察和监测树枝状晶体的生长。