Printable, high-performance solid-state electrolyte films.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33208368.
- Also identified by DOI 10.1126/sciadv.abc8641 and PMC identifier 7673806.
- Licence recorded as CC BY-NC.
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Abstract
Current ceramic solid-state electrolyte (SSE) films have low ionic conductivities (10<sup>-8</sup> to 10<sup>-5</sup> 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.