Flexible and compressive Al2O3/ZrO2/Y2O3 nanofibrous membranes for thermal insulation at 1400 °C

Abstract

Ceramic nanofibrous membranes are used in thermal insulation and various applications. However, ceramic nanofibrous materials were rigid and brittle during high temperatures, leading to structural collapse and limited crystallographic slips. Developing flexible and compressive ceramic materials were necessary but challenging. Herein, we set the flexible and compressive Al2O3/ZrO2/Y2O3 nanofibrous membranes using sol-gel electrospinning and sintering. The Al2O3/ZrO2/Y2O3 nanofibrous membranes at −196 °C to 1400 °C could maintain flexibility and compressive performance. These multiple favorable merits presented the nanofibrous membranes for thermal insulation in new energy batteries, aeronautics, automobile, and even under harsh conditions.