Ultra-High Electromagnetic Absorption Property of One-Dimensional Carbon-Supported Ni/Mo2C and Polyvinylidene Fluoride

Shan Gao; Jie Feng; Guang-Sheng Wang; Ben-Liang Liang

doi:10.3389/fchem.2019.00427

Ultra-High Electromagnetic Absorption Property of One-Dimensional Carbon-Supported Ni/Mo₂C and Polyvinylidene Fluoride

Front Chem. 2019 Jun 20:7:427. doi: 10.3389/fchem.2019.00427. eCollection 2019.

Authors

Shan Gao¹, Jie Feng², Guang-Sheng Wang¹, Ben-Liang Liang¹

Affiliations

¹ School of Chemistry, Beihang University, Beijing, China.
² College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, China.

Abstract

A novel one-dimensional carbon-supported Ni/Mo₂C (Ni/Mo₂C-C) nanocomposite with excellent electromagnetic wave absorption properties was successfully synthesized by annealing NiMoO₄@PDA directly, and then the (Ni/Mo₂C-C)/polyvinylidene fluoride (PVDF) composites were fabricated using a simple blending and hot-molding technique. An excellent reflection loss (RL) of -55.91 dB at 9.28 GHz with a low filler loading (15 wt%) and effective bandwidth (RL < -10 dB) of 14.12 GHz in the thickness range of 1.5-5.0 mm was obtained. Dielectric loss is considered to be the dominant mechanism of (Ni/Mo₂C-C)/PVDF, which was confirmed by the Debye relaxation process and attenuation theory.

Keywords: carbon-supported Ni/Mo2C (Ni/Mo2C-C) nanocomposite; high absorbing properties; hot-molding technique; promising EM wave absorber; the synergistic effect.