Flexible Regenerated Cellulose/Boron Nitride Nanosheet High-Temperature Dielectric Nanocomposite Films with High Energy Density and Breakdown Strength

• DOI: 10.1021/acssuschemeng.8b01219
• Publication Date: 2018-04-06T04:36:45Z
• Authors: Jiaping Lao; Haian Xie; Zhuqun Shi; Gang Li; Bei Li; Guo-Hua Hu; Quanling Yang; Chuanxi Xiong
• Keywords: Nanosheet; Thermal Stability; Polymer nanocomposite

Traditional dielectric polymers are nonbiodegradable and nonrenewable petroleum-derived synthetic ones. Here, we report on flexible 2D nanolayer-structured nanocomposite films which easily fabricated from aqueous NaOH/urea solutions of biodegradable renewable cellulose boron nitride. Cellulose molecules serve as a stabilizer for exfoliated nitride nanosheet (BNNS) provide the nanocomposites with high constant, while BNNS significantly improves their breakdown voltage. 10 wt % in leads to film energy storage density 4.1 J cm–3 voltage 370 MV m–1. The is much higher than that any commercial polymer well biomass-based materials reported literature. Concurrently, these possess thermal conductivity 2.97 W m–1 K–1 excellent stability properties. This work provides new route toward fabricating environmentally friendly thermally stable devices.