Lightweight spongy bone-like graphene@SiC aerogel composites for high-performance microwave absorption

Authors/Creators

Yue Jiang
Yu Chen
Yu-Jing Liu
Guo-Xin Sui

Abstract

Lightweight spongy bone-like graphene@silicon carbide (SiC) aerogels were fabricated by the directional freeze-casting of graphene oxide (GO) coated SiC whiskers slurry and thermal reduction of GO@SiC aerogels. The unique hierarchically ordered structure of graphene@SiC aerogels is formed by graphene wrapped SiC whiskers, such a structure possess great advantages such as low density (72 mg/cm³) and high microwave absorption performance for aerogels. The minimum reflection loss of typical sample achieves −47.3 dB at 10.52 GHz with a thickness of 3 mm, and the effective bandwidth of reflection loss ≤ −10 dB can reach 4.7 GHz. These results indicate that the novel graphene@SiC aerogels is an optimal material for high-performance microwave absorption application in aeronautics.

Document Type

Journal Article

Date of Publication

2018

Publication Title

Chemical Engineering Journal

Publisher

Elsevier BV

School

School of Engineering

Comments

Jiang, Y., Chen, Y., Liu, Y. -., & Sui, G. -. (2018). Lightweight spongy bone-like graphene@SiC aerogel composites for high-performance microwave absorption. Chemical Engineering Journal, 337, 522-531. Available here

Copyright

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