Current ceramic solid-state electrolyte (SSE) films have low ionic conductivities (10⁻⁸ to 10⁻⁵ S/cm ), attributed to the amorphous structure or volatile Li loss. Herein, we report a solution-based printing process followed by rapid (~3 s) high-temperature (~1500°C) reactive sintering for the fabrication of high-performance ceramic SSE films. The SSEs exhibit a dense, uniform structure and a superior ionic conductivity of up to 1 mS/cm. Furthermore, the fabrication time from precursor to final product is typically ~5 min, 10 to 100 times faster than conventional SSE syntheses. This printing and rapid sintering process also allows the layer-by-layer fabrication of multilayer structures without cross-contamination. As a proof of concept, we demonstrate a printed solid-state battery with conformal interfaces and excellent cycling stability. Our technique can be readily extended to other thin-film SSEs, which open previously unexplores opportunities in developing safe, high-performance solid-state batteries and other thin-film devices.

当前的陶瓷固态电解质（SSE）膜具有低离子电导率（10 ^-8至10 ^-5S / cm），归因于无定形结构或挥发性Li损失。本文中，我们报告了一种基于溶液的印刷工艺，随后进行了快速（〜3 s）高温（〜1500°C）反应烧结，以制造高性能陶瓷SSE膜。SSE表现出致密，均匀的结构和高达1 mS / cm的优异离子电导率。此外，从前体到最终产品的制造时间通常约为5分钟，比常规SSE合成快10至100倍。这种印刷和快速烧结工艺还允许多层结构的逐层制造，而不会造成交叉污染。作为概念验证，我们演示了具有保形界面和出色的循环稳定性的印刷固态电池。我们的技术可以很容易地扩展到其他薄膜SSE，