2026-10-09T20:05:15Z https://www.scidb.cn/oai

10.57760/sciencedb.01003 2026-08-21T16:39:43Z

2026-08-21 Ultralight and Ultrabroadband CoFe2O4/rGO/CNR Composites doi:10.57760/sciencedb.01003 en The development of high-performance electromagnetic microwave (EMW) absorbers with lightweight characteristics is critical for addressing electromagnetic pollution. In this work, CoFe2O4/reduced graphene oxide/carbon nanoribbon (CFO/rGO/CNR) composite aerogels were successfully fabricated via a combination of hydrothermal and solution mixing strategies. The resulting composite possesses a unique three-dimensional (3D) conductive skeleton formed by rGO and CNRs, with magnetic CoFe2O4(CFO) nanoparticles uniformly dispersed throughout. This hierarchical architecture exhibits superior impedance matching and attenuation capabilities. The optimized sample achieves a minimum reflection loss (RLmin) of -46.5 dB at a thickness of 3.3 mm. Furthermore, an ultrabroad effective absorption bandwidth (EAB) of 6.32 GHz (covering 11.68–18 GHz) is realized at a matching thickness of 3.9 mm. Notably, the aerogel possesses an ultralow average density of 0.056 g/cm³. These findings suggest that the CFO/rGO/CNR composite is a promising candidate for next-generation, lightweight, and broadband EMW absorption applications. electromagnetic microwave absorption; graphene; composite; synergy effect; wide-band microwave absorption material; aerogel Ding Juan RESTRICTED dataset Science Data Bank