Direct synthesis of highly stretchable ceramic nanofibrous aerogels via 3D reaction electrospinning.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35552405.
- Also identified by DOI 10.1038/s41467-022-30435-z and PMC identifier 9098874.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Ceramic aerogels are attractive for many applications due to their ultralow density, high porosity, and multifunctionality but are limited by the typical trade-off relationship between mechanical properties and thermal stability when used in extreme environments. In this work, we design and synthesize ceramic nanofibrous aerogels with three-dimensional (3D) interwoven crimped-nanofibre structures that endow the aerogels with superior mechanical performances and high thermal stability. These ceramic aerogels are synthesized by a direct and facile route, 3D reaction electrospinning. They display robust structural stability with structure-derived mechanical ultra-stretchability up to 100% tensile strain and superior restoring capacity up to 40% tensile strain, 95% bending strain and 60% compressive strain, high thermal stability from -196 to 1400 °C, repeatable stretchability at working temperatures up to 1300 °C, and a low thermal conductivity of 0.0228 W m<sup>-1</sup> K<sup>-1</sup> in air. This work would enable the innovative design of high-performance ceramic aerogels for various applications.