Magnetic-dielectric synergy and interfacial engineering to design yolk–shell structured CoNi@void@C and CoNi@void@C@MoS2 nanocomposites with tunable and strong wideband microwave absorption

In this work, we put forward a scheme to exquisitely design and selectively synthesize the core@shell structured MSe2/FeSe2@MoSe2 (M = Co, Ni) flower-like multicomponent nanocomposites (MCNCs) through a simple two-step hydrothermal reaction on the surfaces of MFe2O4 nanospheres with the certain amounts of Mo and Se sources. With increasing the amounts of Mo and Se sources, the obtained core@shell structured MSe2/FeSe2@MoSe2 (M = Co, Ni) MCNCs with the enhanced content of MoSe2 and improved flower-like geometry morphology could be produced on a large scale. The obtained results revealed that the as-prepared samples displayed improved comprehensive microwave absorption properties (CMAPs) with the increased amounts of Mo and Se sources. The as-prepared CoSe2/FeSe2@MoSe2 and NiSe2/FeSe2@MoSe2 MCNCs with the well-defined flower-like morphology could simultaneously present the outstanding CMAPs in terms of strong absorption capability, wide absorption bandwidth, and thin matching thicknesses, which mainly originated from the conduction loss and flower-like geometry morphology. Therefore, the findings not only develop the very desirable candidates for high-performance microwave absorption materials but also pave a new way for optimizing the CMAPs through tailoring morphology engineering. 

Microstructure optimization of core@shell structured MSe2/FeSe2@MoSe2 (M = Co, Ni) flower-like multicomponent nanocomposites towards high-efficiency microwave absorption

Synergistic construction of three-dimensional conductive network and double heterointerface polarization via magnetic FeNi for broadband microwave absorption

Environmentally friendly bark-derived Co-Doped porous carbon composites for microwave absorption

Murray Bartlett

Papers

One-dimensional Ni@Co/C@PPy composites for superior electromagnetic wave absorption.

One-dimensional Ni@Co/C@PPy composites for superior electromagnetic wave absorption

MoS2 decorated on one-dimensional MgFe2O4/MgO/C composites for high-performance microwave absorption.

MoS2 decorated on one-dimensional MgFe2O4/MgO/C composites for high-performance microwave absorption

Facile fabrication of metal–organic framework derived Fe/Fe3O4/FeN/N-doped carbon composites coated with PPy for superior microwave absorption