Nickel/porous carbon derived from rice husk with high microwave absorption performance

BHPC (biomass hierarchical porous carbon) is a new microwave absorption material with extraordinarily low density, excellent dielectric loss, and a low environmental impact. In this paper, a Ni/BHPC composite is introduced, which were fabricated using a simple electroless plating method. When the NiSO4 con-centration is changed, the electromagnetic characteristics and absorption performance are optimized. The Ni/BHPC composite material exhibits excellent absorption characteristics at a NiSO4 concentration of 0.2 mol/L. With a thickness of 2.7 mm, the RLminis -58.504 dB at 10.741 GHz. In the frequency range 8.221-12.4 GHz, with a thickness of 2.9 mm, this reflection loss (RL) is less than -10 dB. These results indicate that incorporating Ni particles into the BHPC enhances its wave absorption efficiency. The research contributes to develop high-performance porous carbon microwave absorption materials from biomass.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

This paper introduces the fabrication of a Ni/BHPC composite material with excellent absorption characteristics. By changing the concentration of NiSO4, the electromagnetic characteristics and absorption performance of the material are optimized. The research results show that incorporating Ni particles into BHPC enhances its wave absorption efficiency. This study contributes to the development of high-performance porous carbon microwave absorption materials from biomass.