Direct synthesis of highly stretchable ceramic nanofibrous aerogels via 3D reaction electrospinning.

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^-1 K^-1 in air. This work would enable the innovative design of high-performance ceramic aerogels for various applications.

SUBMITTER: Cheng X 

PROVIDER: S-EPMC9098874 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature