Printable, high-performance solid-state electrolyte films

作者：Weiwei Ping, Chengwei Wang, Ruiliu Wang, Qi Dong, Zhiwei Lin, Alexandra H. Brozena, J. Dai, Jian Luo, Liangbing Hu · 发表于：Science Advances · 年份：2020 · DOI：10.1126/sciadv.abc8641 · 被引用次数：87 · 研究领域：Materials Science、Medicine

A solution-based printing and sintering technique is developed to fabricate a range of high-performance ceramic thin films. 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.