Combustion synthesis of SiC/graphene nanocomposites with strong microwave absorption

IF 10.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon Pub Date : 2024-11-23 DOI:10.1016/j.carbon.2024.119849

Bohan Wang , Fei Li , Shuo Zhao , Binbin Fan , Dengke Zhao , Shijia Zhang , Yiyao Ge , Jie Zhang , Wenbin Cao , Kexin Chen , Guanghua Liu

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引用次数: 0

Abstract

Economical and green preparation of SiC composites with tunable microwave-absorbing properties is crucial for industrial applications. In this study, SiC/graphene nanocomposites were synthesized via combustion synthesis technology by using CO₂, a greenhouse gas, as the carbon source. The phase composition, microstructure and microwave-absorbing performance of the SiC/graphene nanocomposites were characterized. Dielectric properties and impedance matching can be precisely controlled simultaneously by changing the composition of the SiC/graphene nanocomposites. The characteristic microstructure of the SiC/graphene nanocomposites with networks of multilayer graphene sheets has a significant contribution to the improved microwave attenuation capability. The SiC/graphene nanocomposite sample with optimized composition and microstructure showed excellent microwave-absorbing performance, with a reflection loss (RL) of −63.94 dB at 6.15 GHz, and effective absorption bandwidth (EAB) of 4.05 GHz for RL < −10 dB. The SiC/graphene nanocomposites with strong microwave absorption have great potential for applications prospects in various fields.

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.